Revolution Design B7 | B84 Ultra Lightweight Differential Outdrive Set (For 10.5T or slower | 2pcs) A12 40mm: Suitable for majority of

40mm: Suitable for majority of setup stations such as Hudy

Can be a good option when the car is too twitchy

Compatibility: Bottles up to 13 cm in height and 4

the Steel Chassis Conversion set is here

7 g/cm³) and far above steel (≈ 7

Revolution Design B7 | B84 Ultra Lightweight Differential Outdrive Set (For 10.5T or slower | 2pcs) A12 40mm: Suitable for majority ofThe Revolution Design B7 B84 Ultra Lightweight Differential Outdrive Set is made for stock racing performance and reduced rotating mass. Designed for 10. 5T or slower motors, these outdrives help the drivetrain spin up faster and feel more responsive, while maintaining a precise fit for consistent diff operation. With a total weight of only 5. 3 g per pair, the set is 2. 4 g lighter than the original parts, offering a noticeable efficiency gain where