Motorcycle Engine Bearings
- S&S Cycle®Pinion Shaft BearingPinion Shaft Bearing 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$80.96
- S&S Cycle®Camshaft Needle BearingCamshaft Needle Bearing 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 engineering ensures the latest in qualityExpertly manufactured from highly reliable materials$15.95 - $20.95
- Wiseco®Top End BearingTop End Bearing 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...Guaranteed workmanship and material qualityPeerless quality and superior consistency$20.10
- S&S Cycle®Outer Camshaft Bearing (31-4081)Outer Camshaft Bearing 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 engineering ensures the latest in qualityExpertly manufactured from highly reliable materials$14.95
- Biker's Choice®Pinion Shaft Bearing Roller and Retainer Kit (19484S1)Pinion Shaft Bearing Roller and Retainer Kit by Biker's Choice®. 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....Includes bearing retainer and fourteen standard diameter rollersTwo kits required to service one engine$24.30
- S&S Cycle®Camshaft Needle Bearing (31-4199-S)Camshaft Needle Bearing by S&S Cycle®. Quantity: 1 Piece. 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 engineering ensures the latest in qualityExpertly manufactured from highly reliable materials$20.95
- S&S Cycle®Pinion Shaft Bearing (31-4085)Pinion Shaft Bearing by S&S Cycle®. Quantity: 1 Piece. Size: + 0.03". 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 engineering ensures the latest in qualityExpertly manufactured from highly reliable materials$80.96
- Wiseco®Top End Bearing (B1006)Top End Bearing by Wiseco®. Length: 17.5mm. Inner Diameter: 14mm. Outer Diameter: 18mm. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...Guaranteed workmanship and material qualityPeerless quality and superior consistency$20.10
- Wiseco®Top End Bearing (B1012)Top End Bearing by Wiseco®. Length: 16.2mm. Inner Diameter: 14mm. Outer Diameter: 18mm. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...Guaranteed workmanship and material qualityPeerless quality and superior consistency$20.10
- Wiseco®Top End Bearing (B1005)Top End Bearing by Wiseco®. Length: 22.5mm. Inner Diameter: 16mm. Outer Diameter: 21mm. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...Guaranteed workmanship and material qualityPeerless quality and superior consistency$20.10
- Wiseco®Top End Bearing (B1002)Top End Bearing by Wiseco®. Length: 23.8mm. Inner Diameter: 18mm. Outer Diameter: 23mm. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...Guaranteed workmanship and material qualityPeerless quality and superior consistency$20.10
- Wiseco®Top End Bearing (B1008)Top End Bearing by Wiseco®. Length: 19.5mm. Inner Diameter: 16mm. Outer Diameter: 21mm.Guaranteed workmanship and material qualityPeerless quality and superior consistency$20.10
- Wiseco®Top End Bearing (B1001)Top End Bearing by Wiseco®. Length: 17mm. Inner Diameter: 15mm. Outer Diameter: 19mm.Guaranteed workmanship and material qualityPeerless quality and superior consistency$20.10
- Wiseco®Top End Bearing (B1036)Top End Bearing by Wiseco®. Length: 24.8mm. Inner Diameter: 19mm. Outer Diameter: 24mm.Guaranteed workmanship and material qualityPeerless quality and superior consistency$20.10
- Wiseco®Top End Bearing (B1003)Top End Bearing by Wiseco®. Length: 21.80mm. Inner Diameter: 18mm. Outer Diameter: 22mm. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...Guaranteed workmanship and material qualityPeerless quality and superior consistency$20.10
- Wiseco®Top End Bearing (B1014)Top End Bearing by Wiseco®. Length: 22mm. Inner Diameter: 18mm. Outer Diameter: 23mm.Guaranteed workmanship and material qualityPeerless quality and superior consistency$20.10
- Wiseco®Top End Bearing (B1013)Top End Bearing by Wiseco®. Length: 19.8mm. Inner Diameter: 15mm. Outer Diameter: 19mm. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...Guaranteed workmanship and material qualityPeerless quality and superior consistency$20.10
- Namura®Top-End Needle BearingTop-End Needle Bearing by Namura®. Quality materials mean increased longevity and continued performance. A critical aspect of any rebuild, gaskets are often given little thought. However, the right materials can make all the differenceCarefully developed for the highest level of qualityUnsurpassed in functionality and reliability$6.35 - $10.08
- All Balls®Crankshaft Bearing and Seal KitCrankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start frictionUsed by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability$30.21 - $160.61
- Outlaw Racing®Wrist Pin BearingWrist Pin Bearing by Outlaw Racing®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality...Designed and manufactured using innovative technologiesMade with maximum safety and reliability in mind$6.25 - $10.32
- ProX®Crankshaft Bearing and Seal KitCrankshaft Bearing and Seal Kit by ProX®. Crankshaft bearings and seals are manufactured at leading OEM factories, mainly in Japan. All bearings and seals are made to exact OEM specifications, to ensure maximum quality and performance....Carefully developed for the highest level of qualityReady to serve reliably for years to come$29.43 - $132.17
- All Balls®Crankshaft Bearing KitCrankshaft Bearing Kit by All Balls®. When it comes to quality, All Balls® knows no compromises. All the products made by this stringent quality control conditions. The latest manufacturing methods coupled with the use of the...Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability$75.07
- Andrews Products®Gear Drive Installation KitGear Drive Installation Kit by Andrews Products®. Cam cover oil ports must be blocked with cover plates (screws included) to complete installation of gear drive cams.Precise engineering provides great longevityPeak accuracy and effectiveness$47.51
- Eastern Performance®Pinion Shaft Bushings Crankcase EndPinion Shaft Bushings Crankcase End by Eastern Performance®. Eastern Performance® has a huge selection of the best motorcycle parts & accessories for your Harley Davidson Touring, Softail, Dyna, Sportster, and V-Rod models. With...Crafted with precision using leading innovationsDesigned specifically for Harley-Davidson motorcycles$26.58 - $55.15
- Feuling®Inner Cam BearingsInner Cam Bearings by Feuling®. Timken full roller style needle inner cam bearings, replaces HD #9215. Supplies the best bearings inner cam bearings are heavy duty full complement style designed to accept the higher loads and demands of...Precision engineered to excite you and performMade in compliance with standards for quality$28.95 - $38.95
- Eastern Performance®Wrist Pin BushingWrist Pin Bushing by Eastern Performance®. Eastern Performance® has a huge selection of the best motorcycle parts & accessories for your Harley Davidson Touring, Softail, Dyna, Sportster, and V-Rod models. With over 20 years of...Crafted with precision using leading innovationsDesigned specifically for Harley-Davidson motorcycles$30.15
- Eastern Performance®Spacer Sprocket ShaftSpacer Sprocket Shaft by Eastern Performance®. Eastern Performance® has a huge selection of the best motorcycle parts & accessories for your Harley Davidson Touring, Softail, Dyna, Sportster, and V-Rod models. With over 20 years of...Crafted with precision using leading innovationsDesigned specifically for Harley-Davidson motorcycles$18.94 - $23.03
- Feuling®Outer Cam BearingsOuter Cam Bearings by Feuling®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at...Precision engineered to excite you and performMade in compliance with standards for quality$49.95 - $69.95
- Eastern Performance®Pinion Shaft Case BushingPinion Shaft Case Bushing by Eastern Performance®. Eastern Performance® has a huge selection of the best motorcycle parts & accessories for your Harley Davidson Touring, Softail, Dyna, Sportster, and V-Rod models. With over 20...Crafted with precision using leading innovationsDesigned specifically for Harley-Davidson motorcycles$62.19
- All Balls®Countershaft WasherCountershaft Washer by All Balls®. When it comes to quality, All Balls® knows no compromises. All the products made by this stringent quality control conditions. The latest manufacturing methods coupled with the use of the...Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability$12.36 - $35.72
Engine bearings are responsible for supporting the crankshaft, camshafts, and some other rotating parts while reducing friction between them. There are three main kinds of bearings found in motorcycles these days: ball, roller, and plain bearings. Actually, the last type is most commonly used in modern motors. Plain or journal bearings work thanks to a thin oil film that is formed between a rotating shaft and bearing. The thickness of this film is measured in microns, but oil viscosity and pressure make it strong enough to avoid direct contact between metal surfaces.
As for the material used, journal bearings may feature two or even three layers of metal. The inner layer is a special soft coating that allows for avoiding scratches on a solid shaft caused by small particles of debris. In general, plain bearings can last incredibly long and withstand very high revs, given that oil quality and pressure are high enough. In the meantime, roller or ball engine bearings are still successfully used in the legendary Big Twins by Harley-Davidson and some other motors, and there are a couple of reasons for that.
First, the constructions employing such bearings are less vulnerable in case of low oil pressure or viscosity. Second, they are cheaper to produce. Less material is needed to support a bearing, and it doesn't need a special oil passage that could potentially get clogged with dirt and affect lubrication. Motorcycle engine bearings are selected taking into account numerous factors, and over time, it gets clear whether the choice was right. For instance, in the late 1990s, there was a problem in Twin Cam engines related to the failure of the rear cam ball bearing, and it was resolved by the installation of the tapered roller one that could better withstand high loads. In our online store, you will find an assortment of quality engine bearings for your bike.
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