Triumph Bonneville Bobber Specs

2021 • 1 variants

First introduced in 2021, the Triumph Bonneville Bobber is a naked bike that has seen 1 variant. The engine is a four stoke, parallel twin, 270° crank angle, SOHC, 4 valve per cylinder. Peak output is rated at 77 hp. It delivers 105 Nm of torque.

About the Triumph Bonneville Bobber

Documented here are the full technical specifications for the Triumph Bonneville Bobber, a Naked bike motorcycle with a production run from 2017 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.

Triumph Bonneville Bobber by Year

2021 Triumph Bonneville Bobber View specs →

Spec Evolution

How key specs changed across production years.

Specification	2018	2020	2021	2026
Frame Type	Dual tubular steel cradle	Dual tubular steel cradle	Tubular steel, twin cradle frame	Tubular steel, twin cradle frame
Seat Height	690 mm / 27.2 in	690 mm / 27.2 in	690 - 700 mm / 27.2 - 27.6 in	683 mm / 26.9 in ↓
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
Wheelbase	1510 mm / 59.4 in	1510 mm / 59.4 in	1500 mm / 59.1 in ↓	1486 mm / 58.5 in ↓
Brakes - Front	Single 310 mm disc, 2 piston floating Nissen calipers, ABS	Single 310 mm disc, 2 piston floating Nissen calipers, ABS	2x 310mm disc, Brembo 2-piston sliding axial calipers ↓	2x 310mm disc, Brembo 2-piston sliding axial calipers
Brakes - Rear	Single 255 mm disc, 2 piston floating Nissen caliper, ABS	Single 255 mm disc, 2 piston floating Nissen caliper, ABS	Single 255mm disc, Nissin single piston sliding axial caliper	Single 255mm disc, Nissin single piston sliding axial caliper OCABS
Fuel Capacity	10.6 Litres / 2.8 US gal / 3.2 Imp gal	10.6 Litres / 2.8 US gal / 3.2 Imp gal	12 Litres / 3.2 US gal ↑	14 Litres / 3.7 US gal ↑
Suspension - Front	Kayaba 41 mm forks	Kayaba 41 mm forks	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	KYB monoshock (RSU), linkage and preload adjustment
Clutch	Wet, multi-plate	Wet, multi-plate	Wet, multi-plate, torque assist clutch	Wet, multi-plate, slip and assist
Final Drive	Chain, X-ring	Chain, X-ring	Chain	X-ring chain
Height	1025 mm / 40.4 in	1025 mm / 40.4 in	1024 - 1055 mm / 40.3 - 41.5 in ↓	1044 mm / 41.1 in ↑
Length	2235 mm / 87.9 in	2235 mm / 87.9 in	1024 - 1055 mm / 40.3 - 41.5 in ↓	1044 mm / 41.1 in ↑
Emissions	-	-	EURO5	Euro 5+
Tyres - Front	100/90-19	100/90-19	130/90 B16 ↑	130/90-16
Width	800 mm / 31.5 in	800 mm / 31.5 in	800 mm / 31.5 in	7920 mm / 31.2 in ↑
Tyres - Rear	150/80-16	150/80-16	150/80 R16	150/80-16
Rake	25.8°	25.8°	25.4° ↓	25.4°
Exhaust	Straight line stainless steel twin-skin slash cut twin stubby silencers	Straight line stainless steel twin-skin slash cut twin stubby silencers	Brushed stainless steel 2 into 2 twin-skin exhaust system with brushed stainless silencers	Brushed stainless steel 2 into 2 twin-skin exhaust system with brushed 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
Swingarm	-	-	Twin sided fabrication	Twin sided turular steel
Trail	87.0 mm / 3.4 in	87.0 mm / 3.4 in	92.0 mm / 3.6 in ↑	92.0 mm / 3.6 in
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 @ 6100 rpm
Wheel Travel - Front	120 mm / 4.7 in	120 mm / 4.7 in	90 mm / 3.5 in ↓	90 mm / 3.5 in
Wheel Travel - Rear	120 mm / 4.7 in	120 mm / 4.7 in	73 mm / 2.8 in ↓	73 mm / 2.8 in
Max Torque	105 Nm / 10.7 kgf-m / 77.4 lb-ft @ 3100 rpm	105 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 @ 4000 rpm