Traxxas Roller Clutch One Way Bearing 5211R Washer TRX 2.5 2.5R 3.3 Revo T-Maxx

Get your nitro engine firing up reliably again with this factory-authentic Traxxas 5211R Roller Clutch Set (commonly referred to as a One-Way Bearing). This premium steel bearing captures the starter shaft when cranking to turn over your engine and instantly freewheels once it catches fire, preventing back-driven damage to your starting system.

As a critical wear item on high-compression TRX 2.5 and 3.3 engines, a slipping or dirty one-way bearing causes your EZ-Start or pull-starter to spin without spinning the crankshaft. Replacing it with this genuine factory kit restores immediate starting grip. It comes complete with the precision 6x8x0.5 mm Teflon washer (TW) to prevent internal drag against the engine backplate.

Key Features & Specifications

• Genuine Traxxas OEM Quality: Upgraded replacement unit for older 5211 parts, ensuring superior engagement and long life under high fuel loads.

• Complete Rebuild Pack: Includes the required low-friction 6x8x0.5 mm washer to ensure proper spacing against the crankshaft pin.

• Hardened Steel Elements: High-grade inner roller needles lock aggressively when rotational torque is applied, preventing slipping.

• Factory Spec Details:

  • Part Number: TRX5211R / 5211R

  • Length: 12mm

  • Inner Diameter: 6mm

  • Included Hardware: (1) One-Way Bearing, (1) 6x8x0.5mm Spacer Washer