Triumph Trident 900 1991-1998 Service Manual

MCN's own review captures the Trident's genuine, unpretentious appeal directly: "reborn Triumph's 900 Trident was about as straightforward a bi[ke]" as the marque offered in its post-1990 revival, and this range was one of the first genuine proof points that the reborn Hinckley factory could build something both characterful and reliable. WhiteDogBikes' own dedicated buyer's guide confirms the model's lasting reputation: "the Trident 900 is considered to be one of the best of the early 1990's Triumphs," built on the same fundamental 885cc triple architecture that also powered the related Trophy, Tiger, Daytona, and Adventurer of the same era.

Power comes from an 885cc liquid-cooled DOHC inline-three, a 76mm x 65mm bore and stroke, and a 10.6:1 compression ratio, fed by three Mikuni carburetors through a 6-speed manual gearbox with chain final drive, delivering a claimed 90-100 hp at 9,000-9,200 rpm and roughly 59-61 lb-ft of torque at 6,500-8,600 rpm. CycleChaos' own detailed technical account is candid about a genuine character quirk in the powerband: "the engine packs some serious punch at lower and higher revs, but somehow lacks power in the mid-range rpms" — a distinctive delivery some owners came to appreciate as part of the triple's charm rather than a flaw. WhiteDogBikes' own buyer's guide confirms a genuine sibling relationship worth knowing: "it was available as pretty much the same bike but with a 750cc engine, the 900cc proved a better bike" — the smaller-displacement Trident 750 sharing nearly identical running gear but generally regarded as the lesser of the two by both period reviewers and today's buyers.

MCN's own collected owner reviews are consistently glowing about long-term ownership, with one owner calling the bike simply "phenomenal," and multiple owners specifically praising the engine's character: "lovely 3 cylinder engine which sounds fantastic as well. So much character. Classic status now, and should not suffer from depreciation." That same collected feedback flags genuine, consistent weak points worth checking on any used example: brakes described as "a little wooden" by modern standards (several owners note braided lines meaningfully improve feel), and a top-heavy feel with a full 25-litre tank. WhiteDogBikes' own maintenance notes confirm the specific age-related issues worth inspecting on this generation: "pitted forks and rotten exhausts if they haven't been garaged," along with "worn sprag clutches (if they didn't have the Triumph warranty recall to correct this) and the coils can be problematic" — genuinely useful pre-purchase inspection points for a bike now well over three decades old. The chassis uses a tubular high-tensile steel frame with 43mm telescopic forks and a gas-pressurized tri-link adjustable rear monoshock, with a large round headlight housing the instrument cluster on top, a one-piece dual seat with passenger grab rail, dual exhaust mufflers, and three double-spoke aluminum wheels carrying through this entire seven-year production span with only detail refinements rather than significant redesign. Dry weight sits around 467 lbs, with a genuine top speed near 134 mph, before the Trident was succeeded by the fully-faired Sprint ST in 1998.

This factory service manual covers the procedures, torque specs, and diagrams needed to keep a 1991-1998 Trident 900 running the way it was built to.