PRO R

BC0900-2 - Polaris RZR Pro-R (21-up) Beehive Spring/Titanium Retainer/Seat Kit

Designed for high rpm, BC valve springs by PAC Racing are wound from only the highest grade, supe...

Designed for high rpm, BC valve springs by PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. BC retainers are machined from premium 6AL4V titanium alloy for added valve control above 10,000 rpm. Also requires BC3991 valve stem seals. Type BC1900 Single Free Length 1.610" Seat 1.265" @ 83 lbs Open 0.850" @ 197 lbs Coil Bind 0.760" Retainer BC2901 Spring Seat BC2911 Net Ca...

BC0900S-2 - Polaris Pro-R Beehive Spring/Steel Retainer/Seat Kit

Designed for high rpm, BC valve springs by PAC Racing are wound from only the highest grade, supe...

Designed for high rpm, BC valve springs by PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. BC retainers are machined from premium chromoly steel alloy for "set it and forget it" wear characteristics. Beehive spring keeps retainer lightweight. Also requires BC3991 valve stem seals. Type BC1900 Single Free Length 1.610" Seat 1.265" @ 83 lbs Open 0.850" @ 197 lbs Coil Bind 0.76...

BC0900X-2 - Polaris Pro-R Beehive Spring/Titanium Retainer/Seal Kit w/o Seat

Designed for high rpm, BC valve springs by PAC Racing are wound from only the highest grade, supe...

Designed for high rpm, BC valve springs by PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. BC retainers are machined from premium titanium alloy, also includes BC3991-2 valve stem seals. Type BC1900-2 Single Free Length 1.610" Seat 1.265" @ 83 lbs Open 0.850" @ 197 lbs Coil Bind 0.760" Retainer BC2901-2 Valve Seal BC3991-2 Net Cam Lift 0.430" w/BC3991 Seal

BC0988 - Polaris Pro R (21-up) Stroker Kit 78mm w/BC Pro625+ Rods

Polaris Pro R - Includes 4340 billet crank, 78mm stroke, BC Pro625+ rods (4.915" c-to-c), custom ...

Polaris Pro R - Includes 4340 billet crank, 78mm stroke, BC Pro625+ rods (4.915" c-to-c), custom CP or BME pistons (choice of bore/compression). 93mm bore = 2.13L, 94mm = 2.165L, 96mm = 2.26L Crank # BC5917 - 78mm  Rod # BC6916 - 4.915" Piston # BC7915 - Custom

BC0989LW - Polaris Pro R (21-up) LW Stroker Kit 78mm w/BC ProH2K Rods

Polaris Pro R - Includes 4340 billet LW crank with no center counterweights, 78mm stroke, BC ProH...

Polaris Pro R - Includes 4340 billet LW crank with no center counterweights, 78mm stroke, BC ProH2K rods (4.915" c-to-c), custom CP or BME pistons (choice of bore/compression). 93mm bore = 2.13L, 94mm = 2.165L, 96mm = 2.26L Crank # BC5917 - 78mm  Rod # BC6915 - 4.915" Piston # BC7915 - Custom

BC3801-2 - Polaris Pro-R (21-up) Stainless Steel Exhaust Valves - 29.2mm (STD)

BC valves are one piece design with a friction welded Stellite tip for the best possible performa...

BC valves are one piece design with a friction welded Stellite tip for the best possible performance. Every valve is made from premium grade, heat resistant stainless steel material to insure reliability with high boost and/or high rpm applications. The undercut stem above the head area not only reduces overall weight for extended rpm potential, but also significantly improves air/fuel flow in and out of the combustion chamber. Every valve is fully machined and features a swirl polished finis...

BC3803-2 - Polaris Pro R (21-up) Stainless Steel Exhaust Valves - 30.2mm (+1mm)

BC valves are one piece design with a friction welded Stellite tip for the best possible performa...

BC valves are one piece design with a friction welded Stellite tip for the best possible performance. Every valve is made from premium grade, heat resistant stainless steel material to insure reliability with high boost and/or high rpm applications. The undercut stem above the head area not only reduces overall weight for extended rpm potential, but also significantly improves air/fuel flow in and out of the combustion chamber. Every valve is fully machined and features a swirl polished finis...

BC3807N-2 - Polaris Pro R (21-up) Inconel Exhaust Valves - 33.0mm (+3.8mm)

BC valves are one piece design with a friction welded Stellite tip for the best possible performa...

BC valves are one piece design with a friction welded Stellite tip for the best possible performance. Every valve is made from premium grade, extreme heat resistant Inconel NCF751 alloy or Inconel material to insure reliability with high boost and/or high rpm applications. The undercut stem above the head area not only reduces overall weight for extended rpm potential, but also significantly improves air/fuel flow in and out of the combustion chamber. Every valve is fully machined and feature...

BC3965I-2 - Polaris Pro R Fury 2.0L Intake Valve Guides (BC Design)

BC premium valves guides are made from Manganese Silicon Aluminum Bronze alloy and CNC machined t...

BC premium valves guides are made from Manganese Silicon Aluminum Bronze alloy and CNC machined to exacting tolerances. Threaded tip to prevent valve seals from popping off. BC guides are resistant to cracking and corrosion, while reducing friction and insures high lubrication even at elevated engine temperatures and rpm's. The perfect replacement to worn or damaged guides and 100% compatible with BC's lineup of stainless steel valves.

BC3990-2 - Polaris Pro R Fury 2.0L Valve Stem Seals Designed for BC3965/Aftermarket Valve ...

BC valve stem seals are designed for standard aftermarket valve guides like BC3965. The seals all...

BC valve stem seals are designed for standard aftermarket valve guides like BC3965. The seals allow a carefully defined amount of engine oil from the cylinder head into the combustion chamber—to lubricate the rotating valve stem in the valve guide. BC valve stem seals are produced from high performance materials for increased part life and lower wear.

BC3992-2 - Polaris Pro R Fury 2.0L Valve Stem Seals for BC3966-2 Valve Guides

BC valve stem seals are designed for BC’s exclusive, threaded end valve guides (BC3966-2) that p...

BC valve stem seals are designed for BC’s exclusive, threaded end valve guides (BC3966-2) that prevents the seal from popping off the guide. The seals allow a carefully defined amount of engine oil from the cylinder head into the combustion chamber—to lubricate the rotating valve stem in the valve guide. BC valve stem seals are produced from high performance materials for increased part life and lower wear.

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 bear...

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 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 consistent accuracy to key characterist...

BC5917 - Polaris Pro R (22-up) 78mm Stroke 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 34 Lbs

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

BC6916T - Polaris Pro-R Titanium Connecting Rods w/ARP625+ Fasteners

Titanium rods for the Polaris Pro R (and XPTurbo engines) designed for any high rpm application l...

Titanium rods for the Polaris Pro R (and XPTurbo engines) designed for any high rpm application like desert, short course or drag racing. The lighter rotating mass delivers instant throttle response in and out of the corners and down the straights. Easier on bearings too! Features ARP CustomAge 625+ fasteners for peace of mind above 11,000 rpm. C-to-C 4.915" BE Bore 1.889" BE Width 0.955" PE Bore 0.866" PE Width 0.900" Gram Wt 380 Torque Specs 65-70 ft lbs - 3/8" 625+

BC8287 - Polaris RZR Pro-R (93.5mm x .088”) Cometic Head Gasket

93.5mm cyl bore, .088” Thickness - Cometic 5 layer gaskets for the RZR Pro-R 4 cylinder combine a...

93.5mm cyl bore, .088” Thickness - Cometic 5 layer gaskets for the RZR Pro-R 4 cylinder combine advanced materials with state-of-the-art manufacturing processes to provide custom-tailored solutions to meet the needs of each individual application. The MLX head gasket is comprised of a three layer setup - Viton coated embossed spring steel outer layers surround a steel inner layer that provides support and thickness to the gasket. Embossments on the gasket allow for a proper seal around oil an...

BC8289 - Polaris RZR Pro-R (93.5mm x .052”) Cometic Head Gasket

93.5mm cyl bore, .052” Thickness - Cometic 5 layer gaskets for the RZR Pro-R 4 cylinder combine a...

93.5mm cyl bore, .052” Thickness - Cometic 5 layer gaskets for the RZR Pro-R 4 cylinder combine advanced materials with state-of-the-art manufacturing processes to provide custom-tailored solutions to meet the needs of each individual application. The MLX head gasket is comprised of a three layer setup - Viton coated embossed spring steel outer layers surround a steel inner layer that provides support and thickness to the gasket. Embossments on the gasket allow for a proper seal around oil an...

BC8880DLC-2 - Polaris Pro R/SlingShot Cam Bucket Followers w/DLC Coating

Features DLC (Diamond Like Carbon) surface treatment for improved wear characteristics. Made from...

Features DLC (Diamond Like Carbon) surface treatment for improved wear characteristics. Made from aerospace grade, 4140 chromoly steel alloy and completely CNC machined from heat-treated billet round bar. Heavy-duty wall thickness eliminates distortion and cam face depression, while reducing overall weight from non-critical stress areas. Nitrided and polished to a surface hardness of 60RC for minimal wear. Provides lower friction with cam lobes and cylinder head lifter bores for improved dura...

CP9100 - Polaris Pro R / SlingShot CP Shelf Pistons w/All Hardware - 93mm x 9.5:1

Pistons are the backbone of any true hardcore racing engine and that’s where CP-Carrillo excels. ...

Pistons are the backbone of any true hardcore racing engine and that’s where CP-Carrillo excels. Our Engineering department started off analyzing the competition, gathering industry data and deciding to make the highest level of pistons, period. The heart and soul of our pistons are built through our Engineering Department and its resources. This department is made up of several factors that push them ahead of the competition; Reverse Engineering, Design Experience and Flexibility, Analysis a...

CP9103 - Polaris Pro R / SlingShot CP Shelf Pistons w/All Hardware - 93mm x 12.5:1

Pistons are the backbone of any true hardcore racing engine and that’s where CP-Carrillo excels. ...

Pistons are the backbone of any true hardcore racing engine and that’s where CP-Carrillo excels. Our Engineering department started off analyzing the competition, gathering industry data and deciding to make the highest level of pistons, period. The heart and soul of our pistons are built through our Engineering Department and its resources. This department is made up of several factors that push them ahead of the competition; Reverse Engineering, Design Experience and Flexibility, Analysis a...

HPT002 - HPTuners RTD w/OBDII Adapter Cable and 4 Credits Loaded

These BC branded RTD units can be used to deliver a tune to any vehicle supported by HP Tuners. F...

These BC branded RTD units can be used to deliver a tune to any vehicle supported by HP Tuners. Fully compatible with VCM Scanner and Pro Feature Set. Includes the RTD module, OBDII adapter cable and loaded with 4 credits for plug and play tuning on your Polaris Pro R 4 cylinder. Built from the same mold as the MPVI3, the RTD Gen 3 revolutionizes remote tuning capabilities. The new RTD is designed for remote tune delivery for professionals. This interface lets your customers send vehicle read...

BC0981T - Polaris Pro R (21-up) Stage 2+ Forced Induction Camshafts (pair)

Designed for boost levels in the 8 to 20psi range, works well with non-ported cylinder head and s...

Designed for boost levels in the 8 to 20psi range, works well with non-ported cylinder head and stock valve springs. Wider lobe separation & short duration build more cylinder pressure. Adv Dur (.020") 262°/258° Dur @ .050 234°/230° Valve Lift (1:1) .436"/.422" Valve Lift (mm) 11.07/10.72

BC0983 - Polaris Pro R (21-up) Stage 3 Normally Aspirated Race Spec (pair)

Designed for modified engines. Requires BC valve spring kit, seals and guides for clearance due t...

Designed for modified engines. Requires BC valve spring kit, seals and guides for clearance due to high lift. Must run with aftermarket pistons with proper valve reliefs built-in. Cannot be ran with stock/OE pistons due to possible piston to valve contact. Adv Dur (.020") 265°/265° Dur @ .050 240°/240° Valve Lift (1:1) .450"/.450" Valve Lift (mm) 11.43/11.43

BC0984 - Polaris Pro R (21-up) Stage 4 Full Drag Spec (pair)

Top tier spec for the all-out high performance, high rpm build. Requires BC spring/retainer kit. ...

Top tier spec for the all-out high performance, high rpm build. Requires BC spring/retainer kit. ECU and cylinder head work will enhance overall performance. Due to high lobe lift, it is mandatory that you change the valve guides and use BC valve seals. Failure to do so will result in retainer to guide contact causing damage to the head and/or cams. Must run with aftermarket pistons with proper valve reliefs built-in. Cannot be ran with stock/OE pistons due to possible piston to valve contact...

BC6915 - Polaris Pro-R (21-up) ProH2K Connecting Rods w/ARP2000 Fasteners

Polaris Pro-R - ProH2K w/ ARP2000 Fasteners. Made from aerospace grade, 4340 chromoly steel, BC h...

Polaris Pro-R - ProH2K w/ ARP2000 Fasteners. Made from aerospace grade, 4340 chromoly steel, BC high performance connecting rods deliver the reliability required for high rpm applications. Every rod is CNC machined, micropolished surface finish treatment, equipped with Aluminum/Silicone/Bronze pin bushings and finish honed to exacting tolerances. C-to-C 4.915" BE Bore 1.8898" BE Width 0.955" PE Bore 0.866" PE Width 0.955" Gram Wt 580 Torque Specs 50-55 ft lbs - 3/8"

BC9991 - Polaris Cam Timing & Cylinder Holding Tool

This new 2 for 1 tool from BC functions as a camshaft timing plate for both the Polaris RZR XP Se...

This new 2 for 1 tool from BC functions as a camshaft timing plate for both the Polaris RZR XP Series (XPT, XP1000, XP900) and the Pro R cylinder heads as well as a cylinder hold down tool for the Polaris RZR XP's during engine assembly. The steel inserts are designed to hold the camshafts snuggly in place at TDC, unlike the aluminum sheet versions out there that flex or bend causing the camshafts to seize in the head. The rigidity also makes it much easier to set valve lash and install the c...