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The 2025 Pro Circuit Limited Edition Moto-10 Spherical pays tribute to that pivotal era with a design pulled straight from the team’s iconic gear
Description for 1/4-20 x 3/8in
Product Specs for Top End Gasket Set for Big Twin - C9851
The beveled washers and countersunk mounting screws are chrome plated
Jims Machine JM-24641-87 Crankshaft Right Main Bearing Red for Big Twin Evolution 87-99 The 2025 Pro Circuit LimitedFeatures & Benefits: * Red Size Pinion Bearing. * Also upgrades Big Twin 1958 1986 to heavy duty late style bearing. Tech Tips: * This bearing must use OEM retaining ring # 11177A. * Never use the 1958 1986 spiral retaining ring or the earlier OEM # 11177 C Style retaining ring to secure the updated 1 piece Pinion bearing. * Replaces OEM # 24641 87A