Triumph Speed Triple T509 T595 Daytona 955i 1997-2001 Service Workshop Repair Manual

Bennetts' own buying guide untangles the genuine naming confusion at the heart of this exact model range directly: "Triumph made a big step into the unknown with the 1997 T595 Daytona... technically the T595 only lasted two years before being replaced by the 955i. In practice, the 1999/2000 model 955i was identical except for some engine upgrades (they only changed the name because some people got confused and thought it was 595cc not the actual 955cc), so we're including it with the 595." Wikipedia's own account confirms this same identity shift: "the bike was launched in 1997 as the Triumph T595 Daytona and renamed Triumph Daytona 955i in 1999."

Power on the Daytona comes from a 955cc liquid-cooled DOHC inline-three, 4 valves per cylinder, a 79.0mm x 65.0mm bore and stroke, and a 12.0:1 compression ratio, delivering a claimed 107-128 hp (figures vary between manufacturer claims and independent rear-wheel dyno testing) and roughly 66 lb-ft of torque at 8,500 rpm through a 6-speed gearbox. Specs Motorcycles' own detailed engineering history confirms the genuine collaborative pedigree behind this powerplant: "the bike featured a 955cc displacement in-line three-cylinder engine designed in part by Lotus" — a real engineering partnership that gave Triumph's reborn brand genuine credibility against established Japanese superbike rivals. Bennetts' own direct comparison against the contemporary Honda Fireblade confirms the Daytona's genuine competitive character despite lower peak output: "the 'Blade made more power (a genuine 118bhp vs the Triumph's 107bhp), and weighed less (183Kg claimed vs 198Kg), but the Triumph used lower gearing and a seriously punchy midrange to match or better the Honda off the line and out of bends."

The T509 Speed Triple, sharing this exact platform's engine architecture at reduced displacement, ran an 885cc version of the same fundamental triple — Bennetts' own Speed Triple history confirms "the second generation Speed Triple, the T509, also took its cues from the firm's Daytona superbike, this time the T595, but with an aggressive styling twist more akin to a streetfighter than café racer thanks to huge twin headlamps and high 'bars," delivering a claimed 108 hp at 9,000 rpm. That same source confirms Triumph genuinely aligned the Speed Triple's engine displacement with its Daytona sibling starting in 1999: "first generation T509s didn't align with the 595 in terms of engine spec, however, running a smaller 885cc unit rather than the full 955cc. Triumph rectified this for 1999, introducing the Speed Triple 955" — a genuine mid-cycle engine upgrade sharing the identical 955cc motor, now delivering 110 hp.

Specs Motorcycles' own detailed running-change record confirms genuine incremental refinement continued across this exact 1997-2001 span: "1998 the exhaust cam was advanced 5°. 1999 the bike received an update with new throttle bodies, injectors, fuel rail," alongside "a more compact and advanced Sagem MC1000 electronic engine management system (2-plug) instead of the original Sagem MC2000 controller (1-plug)" for the 2000-onward 955i. MCN's own year-by-year Speed Triple 955i notes confirm "2001: Numerous engine modifications, restyled seat, new exhaust" — the final genuine update within this exact range before Triumph's more substantial 2002 restyling (covered by a separate later manual). The chassis across the Daytona uses a lightweight aluminum perimeter frame with a 45mm adjustable Showa fork and adjustable rear shock, braking through dual 320mm front discs with Nissin 4-piston calipers and a 220mm rear disc, with the T509/955i Speed Triple sharing this fundamental frame and suspension architecture while adopting a single-sided swingarm and naked, upright ergonomics distinct from the fully-faired Daytona sportbike.

This factory service manual covers the procedures, torque specs, and diagrams needed to keep a 1997-2001 T509 Speed Triple/T595 Daytona/955i running the way it was built to.