BB-01 slipper clutch for BBX 58719

Parts & installation

Manufacturer documented

Vehicle: Tamiya BB-01
Position: rear
Change: Replaces the rigid top shaft and spur mounting with an adjustable slipper clutch.

Sold packs for one stated conversion

Part	Qty
22071Complete BB-01 86T slipper clutch set	1

The maker documents the parts and assembly. An exact-edition independent installation and measured driving benefit were not verified.

This recipe is scoped to BBX 58719 on BB-01. It does not establish applicability to BB-02 or other retro buggies.
Use one 22071 set. It supplies the replacement 20T shaft, 86T spur, inner/outer pressure plates, two pads, spring, slipper screw, two flanged tubes, lock nut and one 1050 bearing.
Retain the stock gearbox and its other 1050 bearing. The drawing explicitly marks that bearing as not included; the shaft replaces the kit main shaft and its separate 20T gear.
Align the octagonal pad sections and shaft/plate recesses. The standard adjustment is fully tightened then backed off four turns, with approximately 4.8 mm shown at the nut end.
Avoid continuous driving with excessive slip because the instructions warn of spur overheating. Confirm the pad, plate, spring and nut assembly against the drawing before changing clutch preload.
Tamiya USA installed this in a 13.5T sensored build and explains its purpose. That factory demonstration does not establish a universal motor, ESC or battery limit, or a requirement for every stock-power BBX.

Maker instructions and assembly diagrams for the stated parts and configuration.