2021年6月16日 · The BSA B50MX was the motocross version of the beloved B50, which would be the last of the big unit-construction singles to come from the Birmingham Small Arms company before their demise in 1973. That gives the MX quite a distinction:

The B50MX is a great looking bike, is relatively light in weight at 109 kg and produces almost 30 Nm of torque. It was let down in competition use by its frame and suspension system which were not really strong enough for off-road use.

2021年5月3日 · The BSA B50 MX was the final competition motorcycle ever built by BSA, a proud British motorcycle manufacturer who had built a staggering number of race winning motorcycles over its decades long history. As the name suggests, the B50 MX was the motocross version of the standard B50.

2024年4月3日 · Starting in 1971, the BSA factory built the 499cc, 84mm x 90mm bore-and-stroke, unit-construction, dry-sump B50 in answer to the growing demand for a good four-stroke off-road bike. Riders would...

2019年10月16日 · This 1973 BSA B50MX was sold new in Grand Junction Colorado and purchased by the seller 25 years ago from the believed second owner. Power comes from a 499cc 4-stroke single and a 4-speed transmission.

2022年11月23日 · This B50MX is now offered at no reserve with an owner’s manual, removed fuel lines, and a clean Florida title in the seller’s name. The B50MX is the motocross version of the standard B50 model, and this example’s 1.0-gallon polished-aluminum fuel tank features white and purple paint, side BSA and Victor 500MX logos, and a Monza-style ...

Here is a recent photo of my flying my 1971 BSA B50MX at Cahuilla Creek MX park in Anza, CA. I restored the bike about two years ago and have raced in local CALVMX events, the Elsinore GP and a few AHRMA events on it.

2022年4月1日 · 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 ...

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The BSA B50 was a single-cylinder 499 cc (30.5 cu in) ohv motorcycle, produced by BSA at their factory in Small Heath, Birmingham. The last of the big capacity unit-construction singles from the Birmingham Small Arms company, it had an alloy engine with a bore of 84 mm (3.3 in) and a stroke of 90 mm (3.5 in).