Use these 3.5:1 gears to boost the top speed of your small-diameter tire Super FM, Super TZ and Super TZ-X chassis cars. The spur gear has weight-saving holes, and is joined in the set by a counter gear, shaft, 620 ball bearing and a two types of gear cover.
Use these 3.5:1 gears to boost the top speed of your small-diameter tire Super FM, Super TZ and Super TZ-X chassis cars. The spur gear has weight-saving holes, and is joined in the set by a counter gear, shaft, 620 ball bearing and a two types of gear cover.