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Standard size: .1875" OD x .800" long. 13 rollers used.

Pinion shaft (right side) crankcase rollers, +.0010"

#969426

Stock:Yes

Without inner race. Replacement right side crankcase bearing from Koyo (former Torrington).

Note: See 519031 for bearing complete with inner race.

Koyo, pinion shaft roller bearing. XL Sportster

#519007

Stock:Yes

Koyo = former Torrington. Full needle. 4 used.
OEM replacement reference 9057

Koyo, camshaft needle bearing. Inner

#511340

Stock:Yes

Koyo is former Torrington. OEM replacement reference 35960-54

Koyo, bearing countershaft. Closed end

#517045

Stock:Yes

1 used. Closed end needle bearing on left side countershaft.
OEM replacement reference 8977

Koyo bearing, transmission closed end

#511680

Stock:Yes

Koyo bearing (former Torrington). Multiple applications.
OEM replacement reference 9025A.

Koyo, bearing mainshaft and clutch hub

#511415

Stock:Yes

Main drive gear.
OEM replacement reference 8905

Koyo, needle bearing transmission mainshaft

#517110

Stock:Yes

Former Torrington.
2 used.
Open end.
OEM replacement reference 35961-52

Koyo needle bearing, transmission countershaft

#517140

Stock:Yes

Used on right side.
Sealed bearing.
Koyo (former Torrington).
OEM replacement reference 9020

Koyo bearing, transmission mainshaft. Sealed

#517055

Stock:Yes

Replaces OEM 8990/A style ball bearing. This bearing will fit will fit all models as front & rear outer cam bearings.

The MoCo redesigned the Twin Cam rear outer cam bearing from ball (OEM 8990/A) to a roller bearing style (OEM 8983/MCS 921138) in 2001. This was done to help prevent failing ball bearings on, specifically, rear (=drive side) cams that are heavier loaded. This 01-up roller style bearing is a 3-piece design that is more heavy duty than a roller bearing. No other parts changed during the bearing changes. The early 99-00 style ball bearings will still fit all 99-06 models front & rear. Using front & rear ball bearings present no issues on cam driven gears.

Koyo, camshaft ball bearing. Outer, front/rear

#503608

Stock:Yes

Fits inside outer primary cover and supports the starter shaft.

Koyo, needle bearing starter shaft, outer

#509395

Stock:Yes

Inner bearing that fits the starter shaft housing. Used to support the starter shaft.

Koyo, bearing starter shaft. Inner

#509390

Stock:Yes

Koyo (former Torrington). When still present it is advised to replace the low cost OEM needle bearing in 92-99 Evolution Big Twin models marked 'INA SCE 138 USA' with a 'full needle' bearing to increase reliability. Especially important when using higher lift cams, which increases stress in the camshaft bearing.
OEM replacement reference 9058, 9058A

Koyo, needle bearing camshaft. 'Full needle'

#511350

Stock:Yes

Fits rear side of generator commutator end. OEM replacement reference 9088.

Koyo needle bearing, generator

#513740

Stock:Yes

2 used. For clutch hub, also called clutch sprocket assembly.
OEM replacement reference 37722-52

Needle bearing, clutch hub

#519805

Stock:Yes

Sold with the OEM color code. Replacement late style right side crankcase bearing.

Note: Will fit 58-86 Big Twins when pinion shaft spacers are used to center the bearing assembly in the race. In combination with OEM 58-86 flywheels you may encouter axial clearance problems. When in doubt use stock 58-86 style retainer with loose rollers (MCS 505150 Std. size) and add appropriate oversize rollers, when required.
Note: See 555545 or 531099 (S&S) for the retaining ring.

Pinion shaft bearing. Blue

#964387

Stock:Yes

Sold with the OEM color code. Replacement late style right side crankcase bearing.

Note: Will fit 58-86 Big Twins when pinion shaft spacers are used to center the bearing assembly in the race. In combination with OEM 58-86 flywheels you may encouter axial clearance problems. When in doubt use stock 58-86 style retainer with loose rollers (MCS 505150 Std. size) and add appropriate oversize rollers, when required.
Note: See 555545 or 531099 (S&S) for the retaining ring.

Pinion shaft bearing. Red

#964187

Stock:Yes

Koyo = former Torrington. Full needle. 2 used.
OEM replacement reference 9198

Koyo, camshaft needle bearing. Inner, front/rear

#503594

Stock:Yes