Alpha is the world's foremost manufacturer of crankpin bearing assemblies for British bikes. Assembly includes the crankpin, bearing, rod liner and nuts (if applicable); for machines with one-piece connecting rods and pressed-together cranks.

Stainless socket-head cap-screw set for British machines. Includes wrenches.

Copper washers in three sizes for drain plugs, etc. Sold individually.

Listed below are some of the gasket sets we have in stock. There is a broad array of applications readily available; if you don't see what you need, please call.

Separate rollers used in many classic-engine applications; consult your parts book or call for specifics. Your choice of sizes; sold individually.

Complete set of the six seals needed for an engine rebuild. Specify 5/8" or 3/4" kickstart shaft.

Top-quality oil seals for a variety of applications. If you don't see what you need, or if you're unsure of the size required, please don't hesitate to contact us.

Made for model year 1960 and on, your choice of any compression ratio between 8.5:1 and 11:1. Most oversizes available, one-week lead time. Call for more information.

Piston kits for 250cc Villiers 31A-37A engines include rings, pin and clips.

There are still some Robbins pistons kicking around. We have a thorough application list on-hand, and a good contact for the remaining stock; please call us for details and prices.