Looking for a replacement Idler for your B5/B5m? This unit will work, although it is 1mm narrower than stock. So two .5mm shims on either side will make it fit. A better fit for the B5 is the Custom Works idler csw4480. I see these are available in aluminum from serpent as well, so that's an interesting option.
Centax-3 V2 Pinion Gear. This pinion gear features the same tooth pitch as the previous gears but now have an improved tooth shape for better efficiency and durability. The tooth count is ...
This is an optional Serpent Aluminum Idler Gear, ...
for the Spyder Buggy SRX 2RM 2wd 1/10, Spyder Buggy SRX-2MM 2wd 1/10, and the Spyder SC truck. This is a machined version of the 27T idler gear in top quality hard-coated ...