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K20A / K20Z

The newest engine in the Honda tuning community. The "K Series" is Honda's mass produced version of the roller rocker valve train assembly found in the S2000. Less friction, more rpm potential, faster action cam profiles...this engine has untapped potential. First introduced in the JDM Integra Type-R in 2001, this engine put out a respectable 220HP @ 8000 rpm straight from the factory (DC5). The K20A also sees service in the JDM Civic Type-R, using the same compression and cam profiles. The first USDM production model was the K20A2 found in the 02-04 RSX-S. Other engines featuring the same head configuration include the K24A2 (TSX) that features a 9.114" deck height, the K20Z1 in the 05-06 RSX-S that includes various JDM Type-R add-ons like cams, throttle bodies, higher compression and Honda's answer to the tuning crowd, the K20Z3 found in the 2006-up Civic Si.

 

After years of high end race and dyno testing, BC has released a line of 8620 steel billet camshafts that deliver the ultimate in high performance. Made from aerospace grade, 8620 steel billet material and CNC ground on state-of-the-art cam grinders, these BC cams deliver the utmost in rigidity at extended rpm range while reducing possible valve float. These are the best cams money can buy and are now available for all stages…including the popular Stage 2 all motor profile.

<b>BC5047</b> - Honda/Acura K20 Crankshaft - 4340 Billet - 92mm Stroke w/OEM Rod Journal

BC5047

BC5047 - Honda/Acura K20 Crankshaft - 4340 Billet - 92mm Stroke w/OEM Rod Journal

92mm stroke, 47.95mm crank pin, 55mm main - 4340 billet

92mm stroke, 47.95mm crank pin, 55mm main - 4340 billet

$ 2,417.15 $ 2,779.72

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

BC5048

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

$ 2,417.15 $ 2,779.72

<b>BC5048LW</b> - Honda K Series LightWeight Crankshaft - 4340 Billet - 92mm Stroke w/LS Journals (-5 lbs lighter)

BC5048LW

BC5048LW - Honda K Series LightWeight Crankshaft - 4340 Billet - 92mm Stroke w/LS Journals...

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 31.5 Lbs

$ 2,828.12 $ 3,252.34

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

BC5049-103

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

$ 2,417.15 $ 2,779.72

<b>BC5049-105</b> - Honda/Acura K24 Crankshaft - 4340 Billet - 105mm Stroke w/B18A Rod Journal

BC5049-105

BC5049-105 - Honda/Acura K24 Crankshaft - 4340 Billet - 105mm 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 105mm Rod Journal 45mm Main Journal 55mm Weight 37.0 Lbs

$ 2,417.15 $ 2,779.72

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

BC5049-99

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

$ 2,417.15 $ 2,779.72

<b>BC5049</b> - Honda/Acura K24 Crankshaft - 4340 Billet - 102mm Stroke w/B18A Rod Journal

BC5049

BC5049 - Honda/Acura K24 Crankshaft - 4340 Billet - 102mm 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 102mm Rod Journal 45mm Main Journal 55mm Weight 33.6 Lbs

$ 2,417.15 $ 2,779.72