Motorcycle Valves & Valvetrain Parts
- S&S Cycle®Street Performance Valve Spring KitStreet Performance Valve Spring Kit by S&S Cycle®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Made in USAPrecise engineering ensures the latest in quality$151.95 - $169.95
- S&S Cycle®Valve Spring KitValve Spring Kit by S&S Cycle®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Crafted to deliver unbeatable levels of qualityHigh grade materials for exceptional performance$217.95 - $344.95
- Vance & Hines®Valve KitValve Kit by Vance & Hines®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$224.99
- Wiseco®Train ValveTrain Valve by Wiseco®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading materials...Crafted to deliver unbeatable levels of qualityHigh grade materials for exceptional performance$16.11 - $119.00
- Wiseco®Valve Adjustment Shim KitValve Adjustment Shim Kit by Wiseco®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$67.70 - $109.41
- S&S Cycle®Compression Release Plastic Cover (50-1080)Compression Release Plastic Cover by S&S Cycle®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$10.95
- S&S Cycle®Rocker Arm Bushing (90-4014)Rocker Arm Bushing by S&S Cycle®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$12.95
- S&S Cycle®Street Performance Valve Spring Kit (900-0593)Street Performance Valve Spring Kit by S&S Cycle®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$151.95
- S&S Cycle®Street Performance Valve Spring Kit (900-0594)Street Performance Valve Spring Kit by S&S Cycle®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$169.95
- S&S Cycle®Valve Guide (90-2210)Valve Guide by S&S Cycle®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading materials...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$51.26
- S&S Cycle®Valve Keeper (50-7166)Valve Keeper by S&S Cycle®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$25.95
- S&S Cycle®Valve Spring Kit (900-0958)Valve Spring Kit by S&S Cycle®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$344.95
- Vance & Hines®Valve Kit (33-4140)Valve Kit (33-4140) by Vance & Hines®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$224.99
- Vance & Hines®Valve Kit (33-4130)Valve Kit (33-4130) by Vance & Hines®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$224.99
- Wiseco®Chromium Nitride Stainless Steel Train Valve (VES022)Chromium Nitride Stainless Steel Train Valve (VES022) by Wiseco®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$21.01
- Wiseco®High Strength Train Valve (VIS004)High Strength Train Valve (VIS004) by Wiseco®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$37.23
- Wiseco®One-Piece Style Train Valve (VIS003)One-Piece Style Train Valve (VIS003) by Wiseco®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$27.72
- Wiseco®Premium Forged Stainless Steel Train Valve (VES004)Premium Forged Stainless Steel Train Valve (VES004) by Wiseco®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$47.31
- Wiseco®Train Valve (VES027)Train Valve (VES027) by Wiseco®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$27.72
- Wiseco®Valve Adjustment Shim Kit (VSK3)Valve Adjustment Shim Kit (VSK3) by Wiseco®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$81.24
- ProX®ValveValve by ProX®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading materials using...Carefully developed for the highest level of qualityReady to serve reliably for years to come$12.70 - $75.13
- Kibblewhite®Valve Seal KitValve Seal Kit by Kibblewhite®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$5.60 - $27.42
- Kibblewhite®Valve GuideValve Guide by Kibblewhite®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect fit for a...Built to provide superior quality and performanceMade with the use of the most innovative technologies$7.78 - $84.77
- K&L Supply®Valve ShimsValve Shims by K&L Supply®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$16.77 - $33.56
- Kibblewhite®Beehive Valve Spring KitBeehive Valve Spring Kit by Kibblewhite®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$166.49 - $282.04
- Mogo®Valve KitValve Kit by Mogo®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading materials using...Built to provide superior quality and performanceMade with the use of the most innovative technologies$27.89 - $68.39
- Hot Cams®Valve Shim KitValve Shim Kit by Hot Cams®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...The leader in innovation, design and developmentDesigned to provide dependable, efficient operation$8.42 - $103.46
- Outlaw Racing®ValveValve by Outlaw Racing®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading materials...These highly durable, light weight stainless steel valves are made as a forged, one piece construction and feature chromed stems and stellite tips for the ultimate in wear resistanceThe friction-reducing black nitride coating is the latest advancement in valve technology allowing for quicker and higher revs$21.94 - $31.94
- Kibblewhite®Valve Spring Replacement KeepersValve Spring Replacement Keepers by Kibblewhite®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Valvetrain and custom engineered components are second to noneYou are purchasing product that has been engineered by a company that's been doing so for 79 years and 2 generations$6.06 - $15.89
- ProX®Valve and Spring KitValve and Spring Kit by ProX®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Steel valves for increased durability and less wear under extreme conditionsNitrided valves offer high microhardness while supersmooth surface finish reduces friction between stem and guide$55.60 - $182.66
The valvetrain of your motorcycle is a mechanical assembly designed to regulate the operation of valves. It has to make sure that valves open up and close down at exactly the right moment allowing the air-and-fuel mixture to enter the combustion chamber and exhaust gases to escape from the engine. Just like in the majority of internal combustion engines, valves are opened when pushed by a camshaft. Double overhead camshafts operate the valves directly, while a single overhead camshaft actuates rockers connected to the inlet and exhaust valves. The timing chain or belt drives the camshaft which rotates synchronously with the engine crankshaft.
Double overhead camshafts allow for reduction of weight and elimination of the reciprocating mass of rockers thus speeding up the valvetrain. Depending on the type of your motorcycle, there can be two, four, or five valves per cylinder. The more valves, the more air and fuel can be delivered for combustion, the more efficiently the engine works. Typically, the inlet valves are bigger than the exhaust valves, or the number of inlet valves is higher than that of exhaust valves. The reason is that it is much harder to suck enough air-and-fuel mixture into the cylinders than to push exhaust gases out with the pistons.
Over the years of daily use and higher mileage, some coil valve springs can become weak or broken. If the spring does not close the valve when it is not actuated by the camshaft, the compression drops drastically. The same happens if the valve is not seating properly due to carbon deposits, bends, or excessive wear. On the digital shelves of our online store, you can find a wide assortment of high-performance valves made of hard-wearing, lightweight titanium. Their surface is hardened thanks to a CrN coating which also reduces friction. Besides a set of valves, the kit includes springs, retainers, spring seats, and valve locks.
Steel valves are much more affordable than their titanium counterparts which need to be replaced on a regular basis. High-quality Chrome Vanadium Steel valves are durable and can serve up to three times longer than their titanium factory-installed analogs even under some of the most extreme operating conditions. Besides, such valves allow you to avoid costly engine modifications offering rebuild options with new retainers, bases, and seals. Steel is heavier than titanium, so you need to use stronger valve springs as well. When choosing a valve set for your restoration project, make sure to get a kit with extra smooth stem surface for reduced friction on the guides.
High-quality valve stem seals must ensure perfect fitment, maximum service life, and optimal valve lift. They must withstand high engine temperatures while being impervious to aggressive oils, fuels, and gases. During their operation, valves bounce against their seats which wears their lips down. Springs force the valves to sink deeper into the motor thus reducing the distance to the camshaft. To compensate the distance in the valve gap, you may simply install another shim of different thickness in the valve end bucket, so you may want to obtain a proper valve shim kit. Visit our store to find premium-quality products offered at an affordable price.
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