DIAPHRAGM UPGRADE RELEASE DISC KIT - 65-E84 B.T. (NU) 531992 is quite large and can

is quite large and can result in a large RPM drop that takes you outside the ideal RPM/torque range

1mm to 111mm) pistons

See Colony 512915 plug & tap kit

Primary Chain Inspection CoverMachined from steel

Note: See 989904 for Colony center screw only

DIAPHRAGM UPGRADE RELEASE DISC KIT - 65-E84 B.T. (NU) 531992 is quite large and canUsed to convert from the stock coil spring to to a diaphragm clutch spring, like used in later models. Replaces the stock release disc, pressure plate and clutch springs. Note: Clutch spring is not included. The compatible Heavy Duty Alto diaphragm clutch spring must be ordered separately as 978916.