In 1971, Bultaco built the Alpina 250 with the trials and enduro rider in mind. It was designed as a successor to the earlier Sherpa T and used the same basic frame. Rated to a top speed of 72-75 MPH, the Alpina was not a quick bike, but the 52.3-inch wheelbase, 11-inch ground clearance and 7-inch telescoping front fork travel made it ideal for off-road obstacle courses and rocky terrain.
Powered by a 244.2cc two-stroke one-cylinder engine, the Alpina produced 20hp at 5,500 RPM. The engine had a 72mm bore and 60mm stroke, with 9:1 compression. A FEMSA flywheel magneto supplied ignition, and an Amal 627 carburetor dispensed the fuel. Top-end lubrication was an oil mist system, supplied by mixing two-stroke oil with the fuel at a 50:1 ratio in the 2.6-gallon tank.
The five-speed transmission used a multiple disc, wet clutch with chain drive to the rear wheel. The kickstart was on the left side of the bike with shifter peg on the right. The bike had rear swing arm suspension and both front and rear drum brakes. A 2.75 x 21-inch tire took the brunt of the front-end abuse, while a 4.00 x 18-inch tire put the power to the ground.
At 214 pounds, the bike was very nimble. The Alpina 250 was only offered from 1971-’74 with sister Alpina 125, 175 and 350 models available in 1973 and 1974. Bultaco added other models, such as the Metralla, Frontera and Lobito; and it enjoyed continued success in both racing victories and bikes sales throughout the 1970s.
This street legal, 1973 Bultaco Alpina is an all original survivor in very good stock condition. The fibreglass gas tank received 2 coats of sealer by the previous owner as a preemptive measure. The bike looks, runs and rides very well, and has papers. It is part of a Victoria collection and is offered at $3500.