Triumph Bonneville Speedmaster Specs

2018 - 2021 • 2 variants

The Triumph Bonneville Speedmaster is a cruiser produced from 2018 to 2021 across 2 variants. It is powered by a four stoke, parallel twin, 270° crank angle, sohc, 4 valve per cylinder. Peak power output is 77 hp. Peak torque is 106 Nm.

About the Triumph Bonneville Speedmaster

Documented here are the full technical specifications for the Triumph Bonneville Speedmaster, a Custom / cruiser motorcycle with a production run from 2018 to 2026. Specification data includes engine type and displacement, maximum power and torque output, transmission details, frame construction, suspension travel front and rear, brake types and rotor dimensions, tyre sizes, and overall weight and dimension figures. Select a year above to view the complete spec sheet for that model year.

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Triumph Bonneville Speedmaster by Year

Triumph Bonneville Speedmaster 2021 specs

2021 Triumph Bonneville Speedmaster View specs →

Triumph Bonneville Speedmaster 2018 specs

2018 Triumph Bonneville Speedmaster View specs →

Spec Evolution

How key specs changed across production years.

Specification	2018	2020	2021	2026
Seat Height	705 mm / 27.7 in	705 mm / 27.7 in	705 mm / 27.8 in	705 mm / 27.8 in
Displacement	1198 cc / 73.1 cu in	1198 cc / 73.1 cu in	1198 cc / 73.1 cu in	1198 cc / 73.1 cu-in
Frame Type	Dual tubular steel cradle	Dual tubular steel cradle	Tubular steel, twin cradle frame	Tubular steel, twin cradle frame
Brakes - Front	2 x 310 mm Disc, 2 piston calipers, ABS	2 x 310 mm Disc, 2 piston calipers, ABS	2 x 310mm disc, Brembo 2-piston sliding axial calipers	2 x 310mm disc, Brembo 2-piston floating calipers, OCABS
Engine Detail	Four stoke, parallel twin, 270o crank, SOHC	Four stoke, parallel twin, 270o crank, SOHC	Four stoke, parallel twin, 270° crank angle, SOHC, 4 valve per cylinder	Four stoke, parallel twin, 270° crank angle, SOHC, 4 valve per cylinder
Brakes - Rear	Single 255 mm disc, 2 piston caliper, ABS	Single 255 mm disc, 2 piston caliper, ABS	Single 255mm disc, Nissin single piston sliding axial caliper	Single 255mm disc, Nissin single piston sliding caliper, OCABS
Fuel Capacity	12 Litres / 3.17 US gal	12 Litres / 3.17 US gal	12 Litres / 3.2 US gal	14 Litres / 3.7 US gal ↑
Suspension - Front	41 mm Kayaba fork	41 mm Kayaba fork	47 mm Showa cartridge forks ↑	47 mm Showa cartridge forks
Suspension - Rear	Kayaba twin shocks with adjustable preload	Kayaba twin shocks with adjustable preload	Mono-shock RSU with linkage and preload adjustment	KYB Mono-shock RSU with linkage and preload adjustment
Clutch	Wet, multi-plate	Wet, multi-plate	Wet, multi-plate, torque assist clutch	Wet, multi-plate, slip & assist
Final Drive	Chain, X-ring	Chain, X-ring	Chain	X-ring chain
Length	-	-	2225 mm / 87.6 in	2220 mm / 87.4 in ↓
Emissions	-	-	EURO5	Euro 5+
Exhaust	Straight line stainless steel twin-skin slash cut twin stubby silencers	Straight line stainless steel twin-skin slash cut twin stubby silencers	Chromed stainless steel 2 into 2 twin-skin exhaust system with chromed stainless silencers	Chromed stainless steel 2 into 2 twin-skin exhaust system with chromed stainless silencers
Fuel Induction	Multipoint sequential electronic fuel injection	Multipoint sequential electronic fuel injection	Multipoint sequential electronic fuel injection	Electronic fuel injection with electronic throttle control. 2 riding modes (Road, Rain)
Swingarm	-	-	Twin sided fabrication	Twin sided tubular steel
Max Power	57.4 kW / 77 hp @ 6550 rpm	57.4 kW / 77 hp @ 6550 rpm	57.5 kW / 76.9 hp @ 6100 rpm ↑	57.5 kW / 76.9 hp @ 6000 rpm
Max Torque	106 Nm / 10.7 kgf-m / 77.4 lb-ft @ 3100 rpm	106 Nm / 10.7 kgf-m / 77.4 lb-ft @ 3100 rpm	106 Nm / 78.2 lb-ft @ 4000 rpm	106 Nm / 78.2 lb-ft @ 3750 rpm

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