1999 Triumph Daytona 955i Specifications

Name: 1999 Triumph Daytona 955i
Brand: Triumph

Sport • Specs last verified 13 July 2026

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1999 Triumph Daytona 955i Overview

Triumph Daytona 955i is a sport motorcycle, displacing 955 cc. Power comes from a Four stroke, transverse three cylinder, DOHC, 4 valves per cylinder engine, a compression ratio of 11.2:1. On the performance side, it delivers 94.8 kW @ 9900 rpm of peak power and 100 Nm @ 7600 rpm of torque. Top speed is factory-quoted at 270 km/h. On the road, the 1999 Daytona 955i tips the scales at 198 kg, carries a 18-litre fuel tank, offers a seat height of 800 mm and spans a 1431mm wheelbase. That's roughly 5.1 kg lighter than the average sport motorcycle in our database. The full 1999 Triumph Daytona 955i spec sheet below covers every technical detail, from suspension travel to tyre sizes.

1999 Daytona 955i - Pros & Cons

Strengths

Strong power output: With 94.8 kW @ 9900 rpm and 100 Nm @ 7600 rpm of torque on tap, the Daytona 955i is no slouch for its class.
Fuel injection: Fuel injection means consistent cold starts and clean throttle response without the fussiness of a carbureted setup.
Large fuel range: A 18-litre tank means fewer stops on longer rides - a genuine plus for touring or a lengthy daily commute.

Considerations

Chain final drive upkeep: Budget time for routine chain maintenance - it's cheap to replace but needs consistent attention to avoid premature sprocket wear.

Wear Points & Servicing Notes

Cooling system servicing

Daytona 955i's Liquid cooled setup is low-maintenance provided the coolant interval is kept - old, acidic coolant is the main cause of long-term corrosion in the water passages.

Fuelling & injector care

The Multipoint sequential electronic fuel injection on the Daytona 955i needs little beyond good fuel and periodic use of an injector-cleaner additive - no jetting or float-bowl maintenance to worry about.

Brake disc and pad wear

Braking up front comes from 2 x 320 mm Discs, 4 piston calipers - solid stopping power, with disc and pad wear best checked on the same schedule as tyre changes.

Suspension condition on used examples

The Daytona 955i's suspension runs 45 mm Forks with dual rate springs and adjustable preload, compression and rebound damping at the front. The rear uses Monoshock with adjustable preload, compression and rebound damping. Fork-seal condition and rear linkage play are the two things worth checking before buying used.

Final drive maintenance

The Daytona 955i uses chain final drive, which is cheap to replace but needs regular cleaning, lubrication and tension checks to get a full service life out of the sprockets.

Frame & chassis check

Built around a Tubular, fabricated aluminium alloy perimeter, swingarm single sided, aluminium alloy with eccentric chain adjuster, the Daytona 955i's chassis is straightforward to inspect: look for corrosion, cracks or repair welds around stress points like the head-stock and swingarm mounts.

Daytona 955i - Buying & Maintenance Guide

What to check before buying

Before handing over money for a used 1999 Triumph Daytona 955i, cover the fundamentals: service book and oil change history, chain and sprocket wear, and any sign of oil weeping around the casings. Cold-starting it yourself tells you a lot - a healthy Daytona 955i should catch quickly and settle into a smooth idle.

Oil and filter changes

Nothing protects a Daytona 955i's engine like disciplined oil changes - stay on the manufacturer's schedule (roughly every 6,000 km or annually). Match the viscosity grade to what the owner's manual specifies, not what's cheapest.

Fuel system care

Fuel injection on the Daytona 955i needs little attention beyond decent fuel and an occasional system-cleaner additive. Anything left standing for three months or more should have its fuel drained and replaced before it varnishes the injectors.

1999 Triumph Daytona 955i - Frequently Asked Questions

What engine does the 1999 Triumph Daytona 955i have?

The 1999 Triumph Daytona 955i uses a Four stroke, transverse three cylinder, DOHC, 4 valves per cylinder. engine with 955 cc of displacement. It is liquid cooled.

What is the top speed of the 1999 Triumph Daytona 955i?

The 1999 Triumph Daytona 955i has a factory-quoted top speed of 270 km/h. Real-world speeds vary depending on rider weight, conditions and state of tune.

How much does the 1999 Triumph Daytona 955i weigh?

The 1999 Triumph Daytona 955i weighs 198 kg. This is the manufacturer's dry figure.

How much power does the 1999 Triumph Daytona 955i make?

The 1999 Triumph Daytona 955i produces 94.8 kW @ 9900 rpm of power and 100 Nm @ 7600 rpm of torque. These are peak figures.

What is the fuel tank capacity of the 1999 Triumph Daytona 955i?

The 1999 Triumph Daytona 955i has a 18-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 300-360 km between stops.

Is the 1999 Triumph Daytona 955i suitable for shorter riders?

The 1999 Triumph Daytona 955i has a seat height of 800 mm. This is a moderate seat height that suits a wide range of rider heights.

What brakes does the 1999 Triumph Daytona 955i have?

The 1999 Triumph Daytona 955i uses 2 x 320 mm Discs, 4 piston calipers at the front and Single 220 mm disc, 2 piston caliper at the rear.

What tyre sizes does the 1999 Triumph Daytona 955i use?

The 1999 Triumph Daytona 955i runs 120/70 ZR17 front and 190/50 ZR17 rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.

What gearbox does the 1999 Triumph Daytona 955i have?

The 1999 Triumph Daytona 955i is fitted with a 6 Speed transmission.

Triumph Daytona 955i Spec Evolution

The Triumph Daytona 955i was produced across 8 model years (1999-2006). The table below highlights the key specifications that changed across the production run - useful whether you are comparing years or tracking down a specific variant.

Specification	1999	2000	2001	2002	2003	2004	2005	2006
Max Power	94.8 kW / 130 hp @ 9900 rpm	94.8 kW / 130 hp @ 9900 rpm	110 kW / 147 hp @ 10700 rpm	110 kW / 147 hp @ 10700 rpm	110 kW / 147 hp @ 10700 rpm	110 kW / 147 hp @ 10700 rpm	110 kW / 147 hp @ 10700 rpm	110 kW / 147 hp @ 10700 rpm
Dry Weight	198 kg / 436 lbs	198 kg / 436 lbs	188 kg / 414 lbs	188 kg / 414 lbs	188 kg / 414 lbs	188 kg / 414 lbs	188 kg / 414 lbs	188 kg / 414 lbs
Top Speed	270 km/h / 167.5 mph	270 km/h / 167.5 mph	263 km/h / 163.5 mph	263 km/h / 163.5 mph	-	-	-	-
Seat Height	800 mm / 31.5 in	800 mm / 31.5 in	815 mm / 32.1 in	815 mm / 32.1 in	815 mm / 32.1 in	815 mm / 32.1 in	815 mm / 32.1 in	815 mm / 32.1 in
Fuel Capacity	18 Litres / 4.7 US gal / 4.0 Imp gal	18 Litres / 4.7 US gal / 4.0 Imp gal	21 Litres / 5.5 US gal / 4.6 Imp gal	21 Litres / 5.5 US gal / 4.6 Imp gal	21 Litres / 5.5 US gal / 4.6 Imp gal	21 Litres / 5.5 US gal / 4.6 Imp gal	21 Litres / 5.5 US gal / 4.6 Imp gal	21 Litres / 5.5 US gal / 4.6 Imp gal
Frame Type	Tubular, fabricated aluminium alloy perimeter, swingarm single sided, aluminium alloy with eccentric chain adjuster	Tubular, fabricated aluminium alloy perimeter, swingarm single sided, aluminium alloy with eccentric chain adjuster	Tubular, fabricated aluminium alloy perimeter, swingarm twin sided, aluminium alloy with eccentric chain adjuster	Tubular, fabricated aluminium alloy perimeter, swingarm twin sided, aluminium alloy with eccentric chain adjuster	Tubular, fabricated aluminium alloy perimeter, swingarm single sided, aluminium alloy with eccentric chain adjuster	Tubular, fabricated aluminium alloy perimeter, swingarm single sided, aluminium alloy with eccentric chain adjuster	Tubular, fabricated aluminium alloy perimeter, swingarm single sided, aluminium alloy with eccentric chain adjuster	Tubular, fabricated aluminium alloy perimeter, swingarm single sided, aluminium alloy with eccentric chain adjuster
Wheelbase	1431mm / 56.3in	1431mm / 56.3in	1426mm / 56.1in	1426mm / 56.1in	1426mm / 56.1in	1426mm / 56.1in	1426mm / 56.1in	1426mm / 56.1in
Final Drive	X ring chain	X ring chain	O-ring chain	O-ring chain	O-ring chain	O-ring chain	O-ring chain	O-ring chain

Key Specifications

Engine

Four stroke, transverse three cylinder, DOHC, 4 valves per cylinder.

Power

94.8 kW / 130 hp @ 9900 rpm

Torque

100 Nm / 10.2 kgf-m / 73.8 lb-ft @ 7600 rpm

Top Speed

270 km/h / 167.5 mph

Weight

198 kg / 436 lbs

Fuel Capacity

18 Litres / 4.7 US gal / 4.0 Imp gal

Full 1999 Triumph Daytona 955i Specifications

Year 1999

Make Model Triumph Daytona 955i

Seat Height 800 mm / 31.5 in

Wheelbase 1431mm / 56.3in

Height 1170 mm / 46.1in

Length 2115 mm / 83.3 in

Width 720 mm / 28.3 in

Dry Weight 198 kg / 436 lbs

Fuel Capacity 18 Litres / 4.7 US gal / 4.0 Imp gal

Top Speed 270 km/h / 167.5 mph

Max Power 94.8 kW / 130 hp @ 9900 rpm

Max Torque 100 Nm / 10.2 kgf-m / 73.8 lb-ft @ 7600 rpm

Standing Start ¼ Mile 11.1 sec / 209 km/h / 130 mph

Displacement 955 cc / 54.0 cu-in

Engine Detail Four stroke, transverse three cylinder, DOHC, 4 valves per cylinder.

Bore x Stroke 79 x 65 mm

Compression Ratio 11.2:1

Cooling System Liquid cooled

Engine Oil Specification Synthetic, 15W/40 Synthetic

Fuel Consumption 6.9 L/100 km / 14.5 km/l / 34 US mpg / 40.8 Imp mpg

Fuel Induction Multipoint sequential electronic fuel injection

Ignition Digital

Lubrication Wet sump

Spark Plug NGK, DPR8EA-9

Starter Electric

Clutch Wet, multi-plate

Final Drive X ring chain

Transmission / Drive 6 Speed

Frame Type Tubular, fabricated aluminium alloy perimeter, swingarm single sided, aluminium alloy with eccentric chain adjuster

Suspension - Front 45 mm Forks with dual rate springs and adjustable preload, compression and rebound damping

Suspension - Rear Monoshock with adjustable preload, compression and rebound damping

Rake 24°

Trail 86 mm / 3.4 in

Brakes - Front 2 x 320 mm Discs, 4 piston calipers

Brakes - Rear Single 220 mm disc, 2 piston caliper

Tyres - Front 120/70 ZR17

Tyres - Rear 190/50 ZR17

Wheels - Front Alloy 3 spoke, 17 x 3.5 in

Wheels - Rear Alloy 3 spoke, 17 x 6.0 in

Specifications are compiled from manufacturer documentation and cross-referenced technical sources, and corrected on an ongoing basis. Spot an error? Let us know.