R025 12mm One Way Bearing

Redcat Hex Nut One Way Bearing is a 12 mm one-way bearing designed for use in 1:10 scale nitro RC car engines and pull-starter systems. It serves as a clutch-style component that allows rotation in one direction while locking in the opposite, helping ensure reliable starter engagement and power transfer from the starter to the engine crankshaft. This part typically fits .16 – .21 class engines with a 12 mm hex interface and a ~6 mm shaft, making it a common spare or replacement item in RC engine drivetrains. Quality metal construction contributes to durability and stable performance in racing and hobby applications.

Features:

• One-way bearing that engages in a single rotational direction for starter/clutch systems

• 12 mm hex outer size for direct fit on compatible nitro RC engines

• Works with engines such as VX .16, .18, .21 models used in 1:10 scale vehicles

• Helps transfer starter motion to crankshaft consistently

• Durable metal material for long-lasting use

• Easy to install as a direct replacement part

• Suitable for maintenance, repair, or upgrade of RC nitro engines