Products

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...

BC0900B-2 - Polaris Pro-R Beehive Spring/Steel Retainer w/No Shim Capture/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 4140 chromoly steel alloy for "set it and forget it" wear characteristics. Beehive spring keeps retainer lightweight. Also requires BC3991 valve stem seals. Type BC1900-2 Single Free Length 1.610" Seat 1.265" @ 83 lbs Open 0.850" @ 197 lbs Coil Bi...

BC0900BX-2 - Polaris Pro R Beehive Spring/Steel Retainer w/No Shim Capture/OEM Seat Kit

Features a retainer design with no shim capture for use with stock Polaris cam buckets and a reco...

Features a retainer design with no shim capture for use with stock Polaris cam buckets and a recommended setup if banging on the anti-lag. 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 4140 chromoly steel for "set it and forget it" wear characteristics. Beehive spring keeps retainer lightweight. Includes OEM style seat and Vi...

BC0900D-2 - Polaris Pro-R (21-up) Dual Spring/Steel Retainer/Seat Kit

Dual spring designed for high rpm and/or anti-lag, works with stock buckets (sizing based on the ...

Dual spring designed for high rpm and/or anti-lag, works with stock buckets (sizing based on the installed height of your valves). 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. NOTE: This kit requires the BC3992 valve seals, in order to run the BC3992 valve...

BC0900S - Polaris XP Turbo (16-up) / XP 1000 (14-up) 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...

BC0900SX - Polaris XP Turbo (16-up) / XP 1000 (14-up) Beehive Spring/Steel Retainer/Seal K...

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 includes 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 BC2901S Valve Seal BC3991 Net Ca...

BC0900X - Polaris XP Turbo (16-up) / XP 1000 (14-up) Beehive Spring/Titanium Retainer/Seal...

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 includes 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 Valve Seal BC3991 Net Cam...

BC0930 - Can-Am X3 / ROTAX 900 ACE 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 H13 Tool Steel alloy for added wear resistance. Kit also includes integrated spring seat and valve seal. Type BC1930 Single Free Length 1.337" Seat 1.130" @ 70 lbs Open 0.730" @ 205 lbs Coil Bind 0.660" Retainer BC2903 Spring Seat BC2913 Net...

BC0930TX - Can-Am X3 / ROTAX 900 ACE Beehive Spring/Titanium Retainer Kit (NO 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 6AL4V titanium alloy for added wear resistance. Type BC1930 BeeHive Free Length 1.337" Seat 1.130" @ 70 lbs Open 0.730" @ 205 lbs Coil Bind 0.660" Retainer BC2903T Spring Seat Stock Net Cam Lift 0.430" / 10.92mm

BC0950 - Yamaha 998 Dual Spring/Steel Retainer/Seat Kit

Kit is intended for OEM shim in retainer setup. Designed for high rpm, BC valve springs by PAC Ra...

Kit is intended for OEM shim in retainer setup. 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 4140 chromoly steel for the ultimate in reliability. Also includes steel valve spring seats. Type BC1950 Dual Free Length 1.572" Outer/1.339" Inner Seat 1.265" @ 76 lbs Open 0.850" @ 192 lbs Coil Bin...

BC2991 - Polaris XP Turbo (16-up) / XP 1000 (14-up) Steel Billet Keepers/Locks (5.5mm stem)

Premium BC billet keepers/valve locks made from chromoly steel alloy. Designed for 5.5mm stem, 7 ...

Premium BC billet keepers/valve locks made from chromoly steel alloy. Designed for 5.5mm stem, 7 degree (set/8)

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...

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...

BC3801N - Polaris XP Turbo (16-up) / XP 1000 (14-up) Inconel 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, 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...

BC3802 - Polaris XP Turbo (16-up) / XP 1000 (14-up) Stainless Steel Intake Valves - 38.8mm...

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, 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 - Polaris XP Turbo (16-up) / XP 1000 (14-up) Stainless Steel Exhaust Valves - 30.2m...

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...

BC3805 - Polaris XP Turbo (16-up) / XP 1000 (14-up) Stainless Steel Exhaust Valves - 32.4m...

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 - Polaris XP Turbo (16-up) / XP 1000 (14-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...

BC3821 - Honda Talon 1000 Inconel Exhaust Valves - 31.0mm (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 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 ...

BC3823 - Honda Talon 1000 Inconel Exhaust Valves - 32.0mm (+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 ...

BC3831N - Can-Am X3 Inconel Exhaust Valves - 25mm (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, 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...

BC3833N - - Can-Am X3 Inconel Exhaust Valves - 26mm (+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, 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...

BC3851N - Yamaha YXZ / Textron XX Inconel Exhaust Valves - 26mm (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, 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...

BC3890 - Polaris XP Turbo (16-up) / XP 1000 (14-up) Valve Lash Adjusters

BC valve lash adjusters are CNC machined from S7 tool steel for the ultimate in wear resistance. ...

BC valve lash adjusters are CNC machined from S7 tool steel for the ultimate in wear resistance. Each shim kit includes 50 pieces from in twelve varying thicknesses starting at 2.4mm thick all the way up to 2.85mm thick in 0.05mm increments. 5 shims in each thickness.

BC3963 - Can-Am X3 (17-up) Intake/Exhaust Valve Guides

Intake and exhaust valve guides for the Can-Am X3/Rotax 900 engine platform. BC premium valves gu...

Intake and exhaust valve guides for the Can-Am X3/Rotax 900 engine platform. BC premium valves guides are 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% compatible with BC's lineup of stainless steel valves. Set/12

BC3965-I - Polaris XP Turbo (16-up) / XP 1000 (14-up) 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. 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.

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.

BC3966 - Polaris XP Turbo / XP 1000 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...

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.

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.

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.

BC3995 - Yamaha YXZ / 998 Valve Stem Seals for Stock or Aftermarket Valve Guides

BC valve stem seals are designed for stock or aftermarket valve guides (BC3967). These Viton seal...

BC valve stem seals are designed for stock or aftermarket valve guides (BC3967). These Viton 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. Set/12

BC8883 - Can-Am X3 Solid Bucket Conversion Kit

Since BC grinds the world's fastest X3 solid lifter camshafts, makes sense that we deliver the wo...

Since BC grinds the world's fastest X3 solid lifter camshafts, makes sense that we deliver the world's lightest solid bucket conversion kit. Features stock O.D. cam buckets from Arrow Precision, the best, most reliable bucket available on the market...not some repurposed OEM stock part. Also includes a beehive spring wound by PAC Racing exclusively for BC. This is the same spring that we use in our proven hydraulic kits that has seen in excess of 10,000 rpm. The lightweight titanium retainer ...

BC8885DLC - Yamaha YXZ (16-up) Cam Bucket Followers w/DLC Coating

Due to the notorious bucket wear issues on the YXZ, BC only offers shim in buckets with DLC coati...

Due to the notorious bucket wear issues on the YXZ, BC only offers shim in buckets with DLC coating. Requires BC spring/retainer kit BC0950B in order to use. 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 fr...

BC9340DLC - Can-Am X3 DLC Solid Bucket Conversion Kit w/Solid Cams

BC solid lifter kit and BC solid lifter camshaft kit. Get the best of both and save some money wi...

BC solid lifter kit and BC solid lifter camshaft kit. Get the best of both and save some money with this cam, lifter and spring kit combo. Includes custom ground BC solid lifter cams designed to your specific application. Since BC grinds the world's fastest X3 solid lifter camshafts, makes sense that we deliver the world's lightest solid bucket conversion kit. Features stock O.D. cam buckets from Arrow Precision, the best, most reliable bucket available on the market...not some repurposed OEM...

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...

Polaris Pro R (22-up) Steel Billet Keepers/Locks (5.5mm stem)

Premium BC billet keepers/valve locks made from chromoly steel alloy. Designed for 5.5mm stem, 7...

Premium BC billet keepers/valve locks made from chromoly steel alloy. Designed for 5.5mm stem, 7 degree (set/16)