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PRO R
BC4901-2
BC4901-2 - Polaris Pro R Rod Bearings (Blue Stock Replacement) set/8
BC Exclusive Pro R / SlingShot Rod Bearings by ACL - Midnight Blue New ACL rod bearings for...
BC Exclusive Pro R / SlingShot Rod Bearings by ACL - Midnight Blue New ACL rod bearings for the Polaris Pro R engine are available exclusively through BC. These are equivalent to Polaris Midnight Blue (Polaris #3514989-027 or #3514998-027) in terms of sizing and fit the Pro R and SlingShot models. ACL Race Series performance engine bearings are manufactured to exacting tolerances. Micron tolerance machining supported by precision measurement systems delivers consistent accuracy to key c...
$ 130.00 $ 149.50
BC4901HX-2
BC4901HX-2 - Polaris Pro R Rod Bearings (White Stock Replacement) set/8
BC Exclusive Pro R/SlingShot Rod Bearings by ACL - White (+.001" clearance) New ACL rod bea...
BC Exclusive Pro R/SlingShot Rod Bearings by ACL - White (+.001" clearance) New ACL rod bearings for the Polaris Pro R engine are available exclusively through BC. These are equivalent to Polaris White (Polaris #3514989-016 or #3514998-016) in terms of sizing (extra .001" oil clearance) and fit the Pro R and SlingShot models. ACL Race Series performance engine bearings are manufactured to exacting tolerances. Micron tolerance machining supported by precision measurement systems delivers...
$ 130.00 $ 149.50
BC5916
BC5916 - Polaris Pro R (22-up) Stock Stroke Crankshaft 73.5mm
73.5mm Pro R Stock Stroke - Now featuring induction hardened timing chain gear. CNC machined from...
73.5mm Pro R Stock Stroke - Now featuring induction hardened timing chain gear. 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
$ 2,800.00 $ 3,360.00
BC5917
BC5917 - Polaris Pro R (22-up) 78mm Stroke Crankshaft
78mm Pro R Stroker Crank - Now featuring induction hardened timing chain gear. Standard weight de...
78mm Pro R Stroker Crank - Now featuring induction hardened timing chain gear. 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 ...
$ 2,800.00 $ 3,360.00
BC5917LW
BC5917LW - Polaris Pro R (22-up) 78mm LightWeight Stroke Crankshaft
78mm Pro R Stroker Crank - Now featuring induction hardened timing chain gear. LightWeight design...
78mm Pro R Stroker Crank - Now featuring induction hardened timing chain gear. 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 ...
$ 2,800.00 $ 3,360.00
BC5918
BC5918 - Polaris Pro R (22-up) 41.40mm Destroker Crankshaft
Destroked 41.40mm Pro R Stroker Crankshaft. Looking to get your 4cyl down to 1200cc or lower disp...
Destroked 41.40mm Pro R Stroker Crankshaft. Looking to get your 4cyl down to 1200cc or lower displacement, this BC destroked design will get you there. 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. Stroke 41.40mm Rod Journal 45mm Main Journal 52mm Weight 34 Lbs
$ 2,800.00 $ 3,360.001 – 6 product(s) of 6