Motorcycle Valves & Valvetrain Parts
- 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$14.04 - $75.99Availability Varies - Depends on Product Options
- 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$5.21 - $12.56In Stock - Ships within 24 hrs
- 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$7.95 - $75.78Availability Varies - Depends on Product Options
- 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$9.24 - $102.24In Stock - Ships within 24 hrs
- 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$99.99 - $184.99Availability Varies - Depends on Product Options
- Bronco ATV® - ValveValve 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 longer...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$8.31 - $14.95In Stock - Ships within 24 hrs
- Hot Cams® - Valve ShimsValve Shims 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 materials...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$9.24 - $10.17In Stock - Ships within 24 hrs
- Kibblewhite® - Intake ValveIntake 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...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$27.91In Stock - Ships within 24 hrs
- Kibblewhite® - Intake Valve GuideIntake Valve Guide 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...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$14.05In Stock - Ships within 24 hrs
- Kibblewhite® - Racing Valve Spring KitRacing 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...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$89.33 - $285.94Availability Varies - Depends on Product Options
- Kibblewhite® - Standard Exhaust ValveStandard Exhaust 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...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$27.91In Stock - Ships within 24 hrs
- Kibblewhite® - ValveValve 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 materials...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$33.80 - $35.15In Stock - Ships within 24 hrs
- Kibblewhite® - Valve Spring KitValve 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 industry-leading...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$30.84 - $101.22In Stock - Ships within 24 hrs
- Kibblewhite® - White Diamond ValveWhite Diamond 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$29.03In Stock - Ships within 24 hrs
- 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$14.95In Stock - Ships within 24 hrs
- 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$15.61 - $16.45Availability Varies - Depends on Product Options
- 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 - $47.31Availability Varies - Depends on Product Options
- 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$67.70In Stock - Ships within 24 hrs
- 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$22.50In Stock - Ships within 24 hrs
- 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$8.43 - $9.28In Stock - Ships within 24 hrs
- 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$12.95In Stock - Ships within 24 hrs
- 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$12.03In Stock - Ships within 24 hrs
- Hot Cams® - Forged Steel Valve Shim Kit (HCSHIM31)Forged Steel Valve Shim Kit (HCSHIM31) 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...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$88.14In Stock - Ships within 24 hrs
- Hot Cams® - Valve Shim Kit (5PK1000315)Valve Shim Kit (5PK1000315) 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...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$9.24In Stock - Ships within 24 hrs
- Hot Cams® - Valve Shim Kit (5PK1300230)Valve Shim Kit (5PK1300230) 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...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$10.17In Stock - Ships within 24 hrs
- Hot Cams® - Valve Shim Kit (5PK890200)Valve Shim Kit (5PK890200) 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...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$9.24In Stock - Ships within 24 hrs
- Hot Cams® - Valve Shim Kit (5PK1000280)Valve Shim Kit (5PK1000280) 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...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$9.24In Stock - Ships within 24 hrs
- Hot Cams® - Valve Shim Kit (5PK890256)Valve Shim Kit (5PK890256) 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...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$9.24In Stock - Ships within 24 hrs
- Hot Cams® - Valve Shim Kit (5PK890252)Valve Shim Kit (5PK890252) 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...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$9.24In Stock - Ships within 24 hrs
- Hot Cams® - Valve Shim Kit (5PK890248)Valve Shim Kit (5PK890248) 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...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$9.24In Stock - Ships within 24 hrs
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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