Our Universal Spool Replaces your B74.1 B74 Slipper to eliminate weight and rotational mass for quicker acceleration. Designed around a durable Associated B74 Slipper shaft, this spool can also be used on B74.1 and Tekno Eb410, ET210, ET410, and the ProStar Short Course conversion for the Et410. fits 32 and 48 Pitch Kimbrough Gears

Includes (1) Gold Annodized spool , special custom M3 set screw, m4 set screws, and a pin,

Options Available: Kimbrough Gears, B74.1 or B74 shaft, Madboxx ProStar Spool /Slipper Adapter

For Tekno, Eb410, Et410, Et210, and ProStar Sc2410T we recommend the B74 shaft and Madboxx ProStar Slipper Adapter

* these gears Cannot be used for Tekno Cars