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 = 2.17L, 96mm = 2.26L Crank # BC5917 - 78mm  Rod # BC6916 - 4.915" Piston # BC7915 - Custom

BC3800-2 - Polaris Pro-R (21-up) Stainless Steel Intake Valves - 37.8mm (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...

BC3802-2 - Polaris Pro R (21-up) Stainless Steel Intake Valves - 38.8mm (+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...

BC3803N-2 - Polaris Pro R (21-up) Inconel 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 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 features a swirl polished finish under ...

BC3965E-2 - Polaris Pro R Fury 2.0L Exhaust 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.

BC3966-2 - Polaris Pro R Fury 2.0L Valve Guides

5.5mm Stem Diameter fits both Intake and Exhaust - BC premium valve guides feature a threaded end...

5.5mm Stem Diameter fits both Intake and Exhaust - BC premium valve guides feature a threaded end where the valve stem seal goes, virtually eliminating the seal popping off at extended rpm's. Made from Manganese Silicon Aluminum Bronze alloy and CNC machined to exacting tolerances. 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% com...

BC3991-2 - Polaris Pro R Fury 2.0L Valve Stem Seat/Seals Designed for Stock Top Hat Seat

BC valve stem seals are designed for OEM Polaris (stock) top hat style seat. Integrated seat/seal...

BC valve stem seals are designed for OEM Polaris (stock) top hat style seat. Integrated seat/seal for OEM valve guides when using stock or BC spring/retainer if running stock cams or cams under.430" lift. 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.

BC6916 - Polaris Pro-R (21-up) Pro625+ Connecting Rods w/ARP625+ Fasteners

Polaris Pro-R - Pro625+ w/ ARP2000 Fasteners. Made from aerospace grade, 4340 chromoly steel, BC ...

Polaris Pro-R - Pro625+ 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 581 Torque Specs 50 ft lbs - 3/8"

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...

BC0982 - Polaris Pro R (21-up) Stage 2+ Duner Camshafts (pair)

More aggressive than the Stage 2 but still works with factory valve springs. Pulls hard up throug...

More aggressive than the Stage 2 but still works with factory valve springs. Pulls hard up through 9500 rpm but still delivers power on demand on the low end. ECU flash or tune recommended. Adv Dur (.020") 260°/262° Dur @ .050 240°/240° Valve Lift (1:1) .430"/.430" Valve Lift (mm) 10.92/10.92

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. Adv Dur (.020") 276°/276° Dur @ .050 252°/252° Valve Lift (1:1) .460"/.460" Valve Lift (mm) 11.68/11.68

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 45 ft lbs - 3/8"