Apr 1, 2022 · This 1971 BSA B50MX is the motocross version of the standard B50 model and is powered by a 499cc OHV single paired with a four-speed transmission. The bike is finished in polished aluminum with purple paint accents and features chrome fenders, an aluminum fuel tank, drum brakes, a replacement Mikuni VM carburetor, 18″ chrome rims, a side ...

Jan 13, 2016 · The 1971 BSA B50 MX sports an air-cooled, four-stroke, 499cc, single cylinder powerplant mated to a four-speed manual transmission and can produce a claimed 34 horsepower and 38 Nm of torque.

Feb 16, 2014 · The BSA B50 motor is one of the most durable and hot rodded in the sport....it's the small block Chevy of VMX. There are plenty of sites explaining B50 mods but like Huskibul said, don't even start until you get a copy of Rupert Ratio's BSA singles book.

SKU: VMX-SEAT Quantity: Price: $425.00 SEAT, B50 SEAT MODIFIED TO MOUNT DIRECTLY TO C15C FRAMES, B44E & B44EA FRAMES (1963-1967) FIBERGLASS BASE WITH STEEL STRAP AND PLATE WITH MOUNTING HARDWARE (STUDS AND NUTS) BUILT INTO THE FIBERGLASS BASE FRONT AND REAR MOUNTING BRACKETS INCLUDED

Feb 7, 2009 · I just purchased a 1974 Triumph TR5MX (BSA B50MX with a Triumph badge on the gas tank. Could anyone recommend a type of front end, suspension, wheels, carburetion, ignition, engine work ect. and maybe someone who does good motor work? Call me crazy but I`d like to race this beast in vintage mx next year. Thanks for your advice in advance.

Nov 14, 2012 · My Metisse witch is powered by a modified B 50 motor is currently running on methanol via an Amal concentric carb . I want to probably fit a Mikuni ( with choke ) and run it …

BSA Goldstar Catalina Scambler rare history with original crate nos vintage vmx 1958 Other Makes BSA Catalina scrambler

This is a carefully reproduced FACTORY owners service tuning manual for the 1971 to 1974 BSA B50MX B50 MX Victor Goldstar and Triumph TR5MX Avenger Motocross models in approx 40 pages. It covers both the capacitor and energy-transfer ignition models.

Micro-birdseye vented, moisture wicking fabric keeps you running cool. Vintage correct foam padded elbows. Wide cuff design allows you to push it up you forearm to securely wear it as 3/4 sleeve style. All Reign jerseys are cut to allow armor to be worn underneath, so there's typically no need to buy a size larger to accommodate it.

NEW IKON VMX SHOCK ABSORBER SET FOR UNIT SINGLES MODEL IN STOCK 14" EYE TO EYE LENGTH COMES WITH REDUCER SLEEVES FOR 3/8" BOLT SHOCK MOUNTS FOR RIDERS 175 TO 210 POUNDS SOFTER SPRING RATE FOR TRACTION * Can be built to to suit rider weight and to desired eye to eye length * Aluminum body w/ externally threaded body for pre-load adjustment