TAMIYA TT-01 FRONT ONE WAY UNIT - 53671With driven wheels, this unit provides excellent traction; when wheels are undriven, it balances rotation disparities between left and right wheels, for minimal speed loss in corners. Features dedicated left and right housings, and other components. Compatible Chassis TT 02, TT 02 Type S*1, TT 02D, TT 01 Type E, TT 01 Type ES, TT 01D Type E, DF 02 & TT 02B*2 Chassis *1: Use with Item 53590 Cup Joint for TB 01 Reinforced Front One Way Unit. *2: Insert