Motorcycle Valves & Valvetrain Parts
- S&S Cycle®Rocker Arm ShaftRocker Arm Shaft 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 engineering ensures the latest in qualityExpertly manufactured from highly reliable materials$14.95
- S&S Cycle®Roller Rocker ArmRoller Rocker Arm 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...Built to match your exact requirementsHigh quality you can rely on$625.95 - $672.95
- S&S Cycle®Sidewinder Valve Spring KitsSidewinder Valve Spring Kits 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...Crafted to deliver unbeatable levels of qualityHigh grade materials for exceptional performance$241.95
- 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
- Shindy®Valve SetValve Set by Shindy®. 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$28.94
- Twin Power®Pushrod Cover KitPushrod Cover Kit by Twin Power®. Chrome plated O.E.M.-style replacement pushrod cover kits. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high...Crafted to deliver unbeatable levels of qualityHigh grade materials for exceptional performance$81.68 - $104.45
- Twin Power®Pushrod Cover SetPushrod Cover Set by Twin Power®. 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$36.30
- Twin Power®Valve & Spring KitValve & Spring Kit by Twin Power®. Twin Power is proud to introduce a new line of high-quality USA-made valve and spring kits to the product line. These are offered as Replacement Valve Kits or Complete Engine Kits. Engine kits include...Made in USACrafted to deliver unbeatable levels of quality$194.92 - $213.42
- Vance & Hines®Intake Valve SetIntake Valve Set 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...Precision CNC Machined from a Stainless One Piece Forging for higher strength & durabilityHigh grade Alloy allowing the valve to withstand high heat and still maintain roundness$59.20
- Vesrah®ValveValve by Vesrah®. 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...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$16.08 - $90.07
- WSM®ValveValve by WSM®. 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...Crafted to deliver unbeatable levels of qualityHigh grade materials for exceptional performance$6.93 - $39.48
- Wiseco®ValveValve 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 using...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$14.82 - $119.00
- Wiseco®Valve Shim Refill KitValve Shim Refill 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 industry-leading...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$8.00
- X2®ValveValve by X2®. 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...Crafted to deliver unbeatable levels of qualityHigh grade materials for exceptional performance$47.77 - $109.78
- X2®Valve KitValve Kit by X2®. 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...Crafted to deliver unbeatable levels of qualityHigh grade materials for exceptional performance$202.34 - $295.76
- Kibblewhite®Exhaust ValveExhaust Valve 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$27.91 - $30.03
- ProX®Valve ShimValve Shim 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...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$7.12 - $9.28
- Andrews Products®High Lift Springs (272110)High Lift Springs by Andrews Products®. 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$45.58
- Andrews Products®Lift Springs (294150)Lift Springs by Andrews Products®. 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$47.79
- Andrews Products®Lower Low Profile Spring Collars (273120)Lower Low Profile Spring Collars by Andrews Products®. 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...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$45.58
- Andrews Products®Medium Lift Spring Collars (276150)Medium Lift Spring Collars by Andrews Products®. 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$53.70
- Andrews Products®Valve Spring Top Collars (293115)Valve Spring Top Collars by Andrews Products®. 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$88.74
- Andrews Products®Valve Spring Top Collars (271100)Valve Spring Top Collars by Andrews Products®. 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$45.58
- Athena®Power Valve Assembly (S410485303018)Power Valve Assembly for Big Bore (S410485303018) by Athena®. 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$192.56
- Bronco ATV®Intake Valve (XU-09164I)Intake Valve (XU-09164I) by Bronco ATV®. Performance valves feature a forged one-piece construction, nitride coating, modified radius, swirl polish, chromed stems, and stellite tips. this provides reduced friction for quicker/higher...Offering OEM replacement and high performance stainless steel valvesBronco valves meet or exceed OEM quality, with exhaust valves manufactured from SUH35HT stainless steel & intake valves manufactured from SUH3 Steel$23.49
- Bronco ATV®Intake Valve (AU-09151I)Intake Valve by Bronco ATV®. Performance valves feature a forged one-piece construction, nitride coating, modified radius, swirl polish, chromed stems, and stellite tips. this provides reduced friction for quicker/higher revs and a...Offering OEM replacement and high performance stainless steel valvesBronco valves meet or exceed OEM quality, with exhaust valves manufactured from SUH35HT stainless steel & intake valves manufactured from SUH3 Steel$11.65
- Bronco ATV®Intake Valve (AU-09033I)Intake Valve (AU-09033I) by Bronco ATV®. Performance valves feature a forged one-piece construction, nitride coating, modified radius, swirl polish, chromed stems, and stellite tips. this provides reduced friction for quicker/higher...Offering OEM replacement and high performance stainless steel valvesBronco valves meet or exceed OEM quality, with exhaust valves manufactured from SUH35HT stainless steel & intake valves manufactured from SUH3 Steel$9.99
- Bronco ATV®Valve (AU-09011E)Valve (AU-09011E) by Bronco ATV®. Performance valves feature a forged one-piece construction, nitride coating, modified radius, swirl polish, chromed stems, and stellite tips. this provides reduced friction for quicker/higher revs and a...Offering OEM replacement and high performance stainless steel valvesBronco valves meet or exceed OEM quality, with exhaust valves manufactured from SUH35HT stainless steel & intake valves manufactured from SUH3 Steel$11.65
- Bronco ATV®Valve (AU-09000E)Valve (AU-09000E) by Bronco ATV®. Performance valves feature a forged one-piece construction, nitride coating, modified radius, swirl polish, chromed stems, and stellite tips. this provides reduced friction for quicker/higher revs and a...Offering OEM replacement and high performance stainless steel valvesBronco valves meet or exceed OEM quality, with exhaust valves manufactured from SUH35HT stainless steel & intake valves manufactured from SUH3 Steel$10.82
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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