Main Jet: 125 (T120/T140 twin-carb 650/750 models use a 130 main jet)

- 250 cc BSA

24mm) handlebars

Classic Chopper Style: The timeless fishtail design provides the perfect finishing touch for custom builds

O-ring sealed idle mixture screw: Ensures precise adjustments and prevents leaks

Rocker Box Caps / Covers - Starburst MCM Style - for Triumph Motorcycles 1963 - 1972 Subcategory_Fender Mounts & Brackets Main Jet: 125 (T120/T140 twin-carbThese really cool, cast aluminum Triumph rocker box inspection caps are reproductions of the rare MCM Starburst caps of the 1950's and 60's. These fit unit Triumph motorcycles 1963 1972. You get four of these trick rocker caps with your purchase.