Never had a Bonneville but did have this 75 Trident. Front and rear disks, electric start, 900cc, The Triumph road race cams and valves, Dunstall exhaust, the engine was built by Danny Macias, the guy that built the road racers for Triumph. Triumph should have kept these and dumped the Bonneville, these had horizontal split cases and didn't leak, made good power for the time, handled exceptionally well.