QR Code Link to This Post 1988 Yamaha YSR50 with DT100 engine swap. This bike is FAST!!! Unlike every other YSR with engine swap on Craigslist, this engine is actually registered to the title and has a custom kickstart so you don't have to bump start it! I've saved the best parts and pieces from every YSR I've owned over the past 20 years to assemble the bike you see here. It features: DT100 engine swap, Daytona tachometer, JDM taillights, adjustable steering stabilizer, adjustable FOX racing shock, dual fork springs, stainless steel brakeline, Douglas Racing wheels with Dunlop tires, Hypercycle triple tree, Team Calamari Racing fork brace, aluminum clip-on handlebars, 1/4 turn race throttle, Answer Racing "Roost Boost", Toomey Racing pipe, Team Calamari Racing swing arm brace, custom fabricated shift linkage and kickstart lever, keyed locking battery cover, new battery and new flasher. All lights and turn signals work perfectly. $3,900 831-2one4-366six