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B4 won’t fit but watch for JC Racing to release some universal style (not cv style) in the near future. They will have both 1/4” for sport and 3/16 for team.

Mja75 wrote: ↑Sat Apr 30, 2022 8:41 am What options are there for alternative drive shafts/axles for the B3?
Can B4 or B44 ones be used?

The drive shafts interchange well from b1/2/3 buggies
You can also use b4 dogbone axles and b1/2/3 dogbones.

or https://www.customworksrc.com/product/mip-cvd-kit-short/