1979 MK-12 Pursang was the last year Bultaco made their MX model. They had planned to release an “all new” model, the MK-15 in 1980. But unfortunately they went out of business. They did produce 5 model MK-15’s along with various prototypes to get to the final production model. They are all 5 in Spain. So I knew the only way I’d obtain one was to clone one, I actually did three, two in blue and this red one. This one for sale is what I believe is what one may have looked like had Bultaco used their early guidelines from early 70’s of their open bikes being red. Note the “all new” engine in the brochure looks almost identical to the 79 yz 250 engine so that’s what I used. These builds take right at 200 man hours to build. I built this one to race with the best of everything I could find.  But I have never started it.  It’s a garage queen for me, but very capable of vintage racing.

Items used:

Dual leading front brake, 49mm conventional forks with bushings and seals replaced, new tires, tubes, and rim locks, hubs and rims powder coated black, new bucanon spokes, pro taper bars and grips, ASV (on the fly adjustable) levers, applied upper triple clamp, all cables new, wide foot pegs, 79 yz250 engine bored and ported by Eric Gorr, new piston, rings, crank bearings, new Mikuni 38mm flat slide carb (will need jetting fine tuning for your area), new reeds and torque block spacer, modern air filter set up, new clutch plates and clutch arm extension, new complete HPI ignition, new PFR race pipe, freshly repacked FMF silencer, A/M shift lever, aluminum kick lever, aluminum case saver and shock saver, aluminum swingarm, new chain and sprockets and roller, new Noleen piggyback shocks, new (both)fenders, new seat assembly and new fuel tank(fiberglass) from Spain, (frame, swingarm, engine, triples, foot brake lever, hubs, backing plates, rims, all powder coated).