2020

Available in 50 and 60 gram base with the capability of adding 32 grams per arm for adjustment. This design allows the option of adding large quantity of weight to three different areas on both...

A heavy duty tool (also known as the grunt tool) that allows you to remove and install your spider. It will work on the STM primary clutch cover as well to hold it from turning while torquing the...

2610 bushing and VH181 Snap Ring 

The 2408 bushing is a replacement bushing for some STM tuner secondary movable sheave applications. Use with clip VH175 (purchase separately) per application.

1816 bushing includes VH131 retaining clip

Bushing and retaining clip.

Replacement bushing for PN 1001304 Cover  

STM ATV helix cover to be used with the PS or KSS style springs. Original part#'s were 1001007 and 1001009 and has been updated to fit both HD and non-HD springs. 

STM HD compression spring helix cover to be used with the KSS style springs, works with HXATV , HXATVG2 and HXSM2S helix's.  ONLY works on secondary's with a 1.500" diameter post.    Comes...

STM Rage 4 and 8 ATV cover complete with bushing (Part# 1810.59 with retaining clip). 

This is the updated replacement part for part# 1001015. Made from forged 7075. Comes assembled complete with rollers and buttons.  Rollers and buttons are replaceable.  We also have a grunt...

Our billet cover is a rigid design made from 6061 aircraft aluminum. This design captures the towers of the movable sheave and helps stop them from spreading.  Our billet cover also allows the use of...