CRANKSHAFTS

BC5018B - Honda B16A Crankshaft - 4340 Billet - 84.5mm Stroke

4340 steel billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided...

4340 steel billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 84.4mm Rod Journal 45mm Main Journal 55mm

BC5020B - Honda/Acura B18A, B18B, B20B Crankshaft - 4340 Billet - 92mm Stroke

4340 billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (mult...

4340 billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 92mm Rod Journal 45mm Main Journal 55mm Weight 31.2 Lbs

BC5039 - Honda H22A1 (50mm Main - 1993-96) Crankshaft - 4340 Billet - 100mm Stroke

4340 billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (mult...

4340 billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 100mm Rod Journal 47.95mm Main Journal 50mm Weight 37.6 Lbs

BC5048 - Honda/Acura K20 Crankshaft - 4340 Billet - 92mm Stroke w/B18A Rod Journal

4340 billet with B18A rod journal. All cranks are stress relieved, shot peened, magna flux inspec...

4340 billet with B18A rod journal. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 92mm Rod Journal 45mm Main Journal 55mm Weight 36.5 Lbs

BC5049-103 - Honda/Acura K24 Crankshaft - 4340 Billet - 103mm Stroke w/B18A Rod Journal

4340 billet with B18A rod journal. All cranks are stress relieved, shot peened, magna flux inspec...

4340 billet with B18A rod journal. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 103mm Rod Journal 45mm Main Journal 55mm Weight 32.6 Lbs

BC5049-99 - Honda/Acura K20 Crankshaft - 4340 Billet - 99mm Stroke w/B16A Rod Journal

4340 billet with B18A rod journal. All cranks are stress relieved, shot peened, magna flux inspec...

4340 billet with B18A rod journal. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 99mm Rod Journal 45mm Main Journal 55mm

BC5049LW - Honda K Series LightWeight Crankshaft - 4340 Billet - 102mm Stroke w/LS Journal...

4340 billet with B18A rod journal. All cranks are stress relieved, shot peened, magna flux inspec...

4340 billet with B18A rod journal. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 102mm Rod Journal 45mm Main Journal 55mm

BC5099 - Honda/Acura C30A/C32B Crankshaft - 4340 Billet - 84mm Stroke w/RB26DETT Rod Journal

4340 billet with RB26DETT rod journal. All cranks are stress relieved, shot peened, magna flux in...

4340 billet with RB26DETT rod journal. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 84mm Rod Journal 47.95mm Main Journal 64mm Weight 34.4 Lbs

BC5109 - Mitsubishi 4G63 (7 Bolt) Crankshaft - 4340 Billet - 102mm Stroke

4340 billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (mult...

4340 billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 102mm Rod Journal 45mm Main Journal 57mm Weight 37.4 Lbs

BC5135 - Hyundai G4KF (2.0L) Crankshaft - 4340 Billet - 98mm Stroke w/Exo X Rod Journal

4340 billet w/Evo X rod journal. All cranks are stress relieved, shot peened, magna flux inspecte...

4340 billet w/Evo X rod journal. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 98mm Rod Journal 52mm Main Journal 52mm Weight 38.4 Lbs

BC5149 - Mitsubishi 6G72 (VR-4) Crankshaft - 4340 Billet - 84mm Stroke, Self Balance

4340 billet, unbalanced. All cranks are stress relieved, shot peened, magna flux inspected and ni...

4340 billet, unbalanced. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 84mm Rod Journal 50mm Main Journal 60mm Weight 37.6 Lbs

BC5209 - Nissan SR20DE(T) Crankshaft - 4340 Billet - 91mm Stroke

4340 billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (mult...

4340 billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 91mm Rod Journal 47.96mm Main Journal 54.965mm

BC5218 - Nissan KA24DE Crankshaft - 4340 Billet - 96mm Stroke

Allow 16 weeks leadtime. 4340 billet. All cranks are stress relieved, shot peened, magna flux ins...

Allow 16 weeks leadtime. 4340 billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 96mm Rod Journal 49.96mm Main Journal 59.97mm

BC5225 - Nissan VQ35DE Crankshaft - 4340 Billet - 86.4mm Stroke, Fully Balanced

4340 billet, balanced. All cranks are stress relieved, shot peened, magna flux inspected and nitr...

4340 billet, balanced. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 86.4mm Rod Journal 51.97mm Main Journal 59.965mm Weight 45.1 Lbs

BC5227 - Nissan VQ35HR Crankshaft - 4340 Billet - 86.4mm Stroke, Fully Balanced

4340 billet, balanced. All cranks are stress relieved, shot peened, magna flux inspected and nitr...

4340 billet, balanced. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 86.4mm Rod Journal 54mm Main Journal 64.96mm Weight 45.4 Lbs

BC5229 - Nissan VQ37HR Crankshaft - 4340 Billet - 92mm Stroke, Fully Balanced

4340 billet, balanced. All cranks are stress relieved, shot peened, magna flux inspected and nitr...

4340 billet, balanced. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 92mm Rod Journal 54mm Main Journal 64.96mm Weight 44.6 Lbs

BC5230 - Nissan RB30 Crankshaft - 4340 Billet - 90mm Stroke

4340 billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (mult...

4340 billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 90mm Rod Journal 49.96mm Main Journal 54.95mm Weight 62.0 Lbs

BC5239 - Nissan RB26/RB25 Crankshaft - 4340 Billet - 79mm Stroke

4340 billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (mult...

4340 billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 79mm Rod Journal 48mm Main Journal 55mm Weight 58.0 Lbs

BC5249 - Nissan VR38DETT Crankshaft - 4340 - 94.4mm Stroke, Fully Balanced

4340 billet, balanced. All cranks are stress relieved, shot peened, magna flux inspected and nitr...

4340 billet, balanced. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 94.4mm Rod Journal 56mm Main Journal 65mm Weight 44.6 Lbs

BC5259LW-110 - Nissan TB48 LightWeight Crankshaft - 4340 Billet - 110mm Stroke (-12 lbs l...

4340 billet with OEM rod journals. All cranks are stress relieved, shot peened, magna flux inspec...

4340 billet with OEM rod journals. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 110mm Rod Journal 56.92mm Main Journal 71mm Weight 72.2 Lbs

BC5259LW - Nissan TB48 LightWeight Crankshaft - 4340 Billet - 108mm Stroke w/OEM Rod Journals

4340 billet with OEM rod journals. All cranks are stress relieved, shot peened, magna flux inspec...

4340 billet with OEM rod journals. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 108mm Rod Journal 56.92mm Main Journal 71mm Weight 72.0 Lbs

BC5307-86 - Toyota 2JZGTE/GE - 4340 Billet Crankshaft, 86mm Stroke w/Honda Journal

4340 billet w/Honda Journal. All cranks are stress relieved, shot peened, magna flux inspected an...

4340 billet w/Honda Journal. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential.  Stroke 86mm Rod Journal 47.95mm Main Journal 62mm Weight 59.8 Lbs

BC5307-94 - Toyota 2JZGTE/GE - 4340 Billet Crankshaft, 94mm Stroke w/Honda Journal

4340 billet w/Honda rod journal. All cranks are stress relieved, shot peened, magna flux inspecte...

4340 billet w/Honda rod journal. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential.  Stroke 94mm Rod Journal 47.95mm Main Journal 62mm Weight 59.8 Lbs

BC5307LW-96 - Toyota 2JZGTE LightWeight Crankshaft - 4340 Billet - 96mm Stroke w/Honda Jou...

4340 billet LightWeight w/Honda Journal. All cranks are stress relieved, shot peened, magna flux ...

4340 billet LightWeight w/Honda Journal. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 96mm Rod Journal 47.95mm Main Journal 62mm Weight 48.5 Lbs

BC5309-90 - Toyota 2JZGTE/GE - 4340 Billet Crankshaft, 90mm Stroke w/Toyota Journal

4340 billet w/OEM Toyota rod journal. All cranks are stress relieved, shot peened, magna flux ins...

4340 billet w/OEM Toyota rod journal. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 90mm Rod Journal 52mm Main Journal 62mm Weight 59.8 Lbs

BC5309LW-86 - Toyota 2JZGTE/GE LightWeight Crankshaft - 4340 Billet - 86mm Stroke w/Toyota...

4340 billet LightWeight with OEM Toyota rod journal. All cranks are stress relieved, shot peened,...

4340 billet LightWeight with OEM Toyota rod journal. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 86mm Rod Journal 52mm Main Journal 62mm Weight 48.2 Lbs

BC5309LW-96 - Toyota 2JZGTE LightWeight Crankshaft - 4340 Billet - 96mm Stroke w/Toyota Jo...

4340 billet LightWeight w/Toyota rod journal. All cranks are stress relieved, shot peened, magna ...

4340 billet LightWeight w/Toyota rod journal. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 96mm Rod Journal 47.95mm Main Journal 62mm Weight 48.5 Lbs

BC5321LW - Toyota B58B30 Crankshaft - 100mm Stroke

4340 billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (mult...

4340 billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 100mm Rod Journal 50mm Main Journal 55mm Weight 52 Lbs

BC5350-95 - Toyota 3SGTE Crankshaft - 4340 Billet - 95mm Stroke

4340 billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (mult...

4340 billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 95mm Rod Journal 48mm Main Journal 55mm Weight 36.6 Lbs

BC5355LW-105 - Toyota 1FZFE LightWeight Crankshaft - 4340 Billet - 105mm Stroke

4340 billet LightWeight. All cranks are stress relieved, shot peened, magna flux inspected and ni...

4340 billet LightWeight. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 105mm Rod Journal 57mm Main Journal 69mm Weight 76.9 Lbs

BC5359 - Toyota 4AGE Crankshaft - 4340 Billet - 83mm Stroke

4340 billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (mult...

4340 billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 83mm Rod Journal 42mm Main Journal 48mm Weight 25.2 Lbs

BC5369U - Toyota 1GRFE Crankshaft - 4340 Billet - 103mm Stroke, Self Balanced

4340 billet, unbalanced. All cranks are stress relieved, shot peened, magna flux inspected and ni...

4340 billet, unbalanced. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 103mm Rod Journal 56mm Main Journal 72.10mm Weight 50.1 Lbs

BC5456 - Chevrolet LS Series Wet Sump Crankshaft - 4340 Forging - 4.000" Stroke, Self Bala...

LS Series for wet sump snout, 4340 non-twist forging, unbalanced. All cranks are stress relieved,...

LS Series for wet sump snout, 4340 non-twist forging, unbalanced. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Add $250 for precision balancing. Stroke 4.000" Rod Journal 2.0987" Main Journal 2.558"

BC5458 - Chevrolet LS Series Wet Sump Crankshaft - 4340 Forging - 4.125" Stroke, Self Bala...

LS Series for wet sump snout, 4340 non-twist forging, unbalanced. All cranks are stress relieved,...

LS Series for wet sump snout, 4340 non-twist forging, unbalanced. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Add $250 for precision balancing. Stroke 4.125" Rod Journal 2.0987" Main Journal 2.558"

BC5459 - Chevrolet LS Series Wet Sump Crankshaft - 4340 Forging - 4.250" Stroke, Self Bala...

LS Series for wet sump snout, 4340 non-twist forging, unbalanced. All cranks are stress relieved,...

LS Series for wet sump snout, 4340 non-twist forging, unbalanced. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Add $250 for precision balancing with provided bobweights. Stroke 4.250" Rod Journal 2.0987" Main Journal 2.558"

BC5509U - Hyundai G6DA V6 Crankshaft - 4340 Billet - 93mm Stroke, Self Balanced

4340 billet steel. All cranks are stress relieved, shot peened, magna flux inspected and nitrided...

4340 billet steel. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 93mm Rod Journal 55mm Main Journal 69mm Weight 39.4 Lbs

BC5609 - Subaru EJ205 (WRX) Crankshaft - 4340 Billet - 79mm Stroke

4340 billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (mult...

4340 billet. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 79mm Rod Journal 52mm Main Journal 60mm Weight 19.2 Lbs

BC5759 - Audi/Lamborghini 5.2L V10 Crankshaft - EN40 Billet - 92.8mm Stroke

EN40B billet steel, rated over 3000whp. All cranks are stress relieved, shot peened, magna flux i...

EN40B billet steel, rated over 3000whp. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 92.8mm Rod Journal 53.96mm Main Journal 66.97mm Weight 59.7 Lbs

BC5799 - BMW M50B25 Crankshaft - 4340 Billet - 95.6mm Stroke

4340 billet. Fits M50B25, M52B25, S52B32 engine blocks. All cranks are stress relieved, shot peen...

4340 billet. Fits M50B25, M52B25, S52B32 engine blocks. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 95.6mm Rod Journal 45mm Main Journal 60mm Weight 59.7 Lbs

BC5901 - Polaris XP 1000 (2014-23) Stroker Crankshaft 78mm w/180° Crank Pin

78mm XP 1000 (180° pin) Stroker (+4.5mm) CNC machined from 4340 billet round bar. All cranks are ...

78mm XP 1000 (180° pin) Stroker (+4.5mm) CNC machined from 4340 billet round bar. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights, rod and main journals are finish sized to work with blue or green Polaris bearings using aftermarket rods. No balancing required prior to installation due to 180° offset pins. Stroke 78mm Rod Journal 40.93mm Main Journal 40.98mm Weight 19.2 L...

BC5910 - Unbalanced Polaris XP Turbo (16-up) Stock Stroke Crankshaft 68mm w/270° Crank Pin

WARNING - These crankshafts are not balanced. Balancing required for operation. 68mm XP Turbo (27...

WARNING - These crankshafts are not balanced. Balancing required for operation. 68mm XP Turbo (270° pin) Stock Stroke - CNC machined from 4340 billet round bar. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights, rod and main journals are finish sized to work with blue or green Polaris bearings using aftermarket rods. These cranks must be fully system balanced prior to installation ...

BC5911-75 - Unbalanced Polaris XP Turbo (16-up) Stroker Crankshaft 75mm w/270° Crank Pin

WARNING - These crankshafts are not balanced. Balancing required for operation. 75mm XP Turbo (27...

WARNING - These crankshafts are not balanced. Balancing required for operation. 75mm XP Turbo (270° pin) Stock Stroke - CNC machined from 4340 billet round bar. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights, rod and main journals are finish sized to work with blue or green Polaris bearings using aftermarket rods. These cranks must be fully system balanced prior to installation ...

BC5911 - Unbalanced Polaris Turbo (16-up) Stroker Crankshaft 72.5mm w/270° Crank Pin

WARNING - These crankshafts are not balanced. Balancing required for operation. 72.5mm XP Turbo (...

WARNING - These crankshafts are not balanced. Balancing required for operation. 72.5mm XP Turbo (270° pin) Stroker (+4.5mm) CNC machined from 4340 billet round bar. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights, rod and main journals are finish sized to work with blue or green Polaris bearings using aftermarket rods. These cranks must be fully system balanced prior to installat...

BC5916 - Polaris Pro R (22-up) Stock Stroke Crankshaft 73.5mm

73.5mm Pro R Stock Stroke - CNC machined from 4340 billet round bar. All cranks are stress reliev...

73.5mm Pro R Stock Stroke - CNC machined from 4340 billet round bar. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights, rod and main journals are finish sized to work with blue or green Polaris bearings using aftermarket rods.  Stroke 73.5mm Rod Journal 45mm Main Journal 52mm Weight 34 Lbs

BC5917LW - Polaris Pro R (22-up) 78mm LightWeight Stroke Crankshaft

78mm Pro R Stroker Crank - LightWeight design with four  counterweights removed for normally aspi...

78mm Pro R Stroker Crank - LightWeight design with four  counterweights removed for normally aspirated applications. CNC machined from 4340 billet round bar. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights, rod and main journals are finish sized to work with blue or green Polaris bearings using aftermarket rods.  Stroke 78mm Rod Journal 45mm Main Journal 52mm Weight 29 L...

BC5918 - Polaris Pro R (22-up) 41.40mm Destroker Crankshaft

78mm Pro R Stroker Crank - Standard weight design for boosted applications. CNC machined from 434...

78mm Pro R Stroker Crank - Standard weight design for boosted applications. CNC machined from 4340 billet round bar. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights, rod and main journals are finish sized to work with blue or green Polaris bearings using aftermarket rods.  Stroke 78mm Rod Journal 45mm Main Journal 52mm Weight 32 Lbs

BC5933 - CAN-AM X3 (17-up) Large Radius EN40B BILLET CRANKSHAFT (73.5mm STROKE)

EN40B billet, large radius snout with an added .080" O.D. snout diameter and no radius around the...

EN40B billet, large radius snout with an added .080" O.D. snout diameter and no radius around the timing chain area to handle the most aggressive clutch and anti-lag setups. Builds full boost 2000 rpm sooner than stock stroke with unlimited boost capabilities. CNC machined from EN40B billet round bar, the hardest material available with through hardening capabilities not possible on standard 4340 steel. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step...

BC5951 - YAMAHA YXZ/SIDEWINDER (16-up) BILLET CRANKSHAFT (71mm STROKE)

These cranks are precision balanced if ordered as a BC stroker kit, bobweights required if using...

These cranks are precision balanced if ordered as a BC stroker kit, bobweights required if using own piston and/or rod combo. 4340 billet crankshaft in +4.8mm stroke (71mm). MUST USE WITH SIDEWINDER OIL PUMP/SPROCKET. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. These...