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TRIUMPH BONNEVILLE
Few motorcycles are as evocative to so many as the Bonneville surely is.
For 2004 a new, crisp black engine finish adds a subtle counterpoint to the existing handsome, polished aluminium option. But no matter which way the Bonneville’s air-cooled 790cc twin-cylinder engine is dressed it combines a simple, timeless look with modern engineering techniques and materials. Both pistons rise and fall together – via a 360° crankshaft firing interval – so the classic feel and character of a British twin-cylinder engine is retained. To provide some modern-day civility, twin balancer-shafts add refinement.
Thus the present-day ‘Bonnie’ maintains a mechanical link to its distant forbears of the ’60s while at the same time providing a thoroughly modern engine with plenty of power. Its engine produces 62PS (61bhp) at 7,400 rpm. Ninety percent of peak torque – a very healthy 60Nm (44.3ft.lbf) – is delivered from 2,750 rpm and maintained through to the redline, providing smooth acceleration in any of the five gears.
Electrically heated twin 36mm carburettors feed the engine and are fitted with throttle position sensors. A pair of ‘peashooter’ style silencers deals with spent gases and enhances the traditional look as does the triangular engine cover and left-hand side clutch casing, which are quintessentially Triumph.
The Bonneville is an easy-to-manage motorcycle, thanks to a low seat height of 775mm – 30.5-inches – and similarly low centre of gravity. The tubular steel double cradle frame and box-section swingarm are immensely strong and the steering geometry (rake and trail are 29° and 117mm respectively) provides composure at speed as well as ensuring the Bonnie needs only light input at the handlebars. Manoeuvrability in an urban environment is excellent too.
Thoroughly modern tyres – the front is a 100/90-R19, rear’s a 130/80-R17 – and the braking set-up of single front 310mm disc and 255mm rear, both worked on by powerful twin-piston calipers, equates to thoroughly modern-day road-holding, handling and stopping. The Bonneville’s understated, single-tone paint schemes of Jet Black or Cardinal Red (polished engine only) adds an underscore of class to its classic lines. One thing’s for sure – Triumph’s twin matches authenticity and tradition to the needs of modern motorcyclists. And does it in style.
Specification changes for 2004:
Jet Black paint scheme available with either polished engine covers or new black engine finish.
Colour options:
- Jet Black
- Cardinal Red
Silencers (for off-road
use only) 
Alarm/Immobiliser (Thatcham Category MC1 compliant) 
Tank Bag 
Leather Panniers 
Fabric Panniers 
Summer Screen 
Roadster Screen 
Colour Co-ordinated Fly
Screen 
Knee Pads 
King and Queen Seat 
Single Seat 
Grab Rail 
Low Sissy Bar 
High Sissy
Bar 
Chrome
Cam Cover 
Chrome Lifter Arm
Cover
Chrome Chain Guard 
Chrome
Levers
Chrome Side Panels
Chrome Front Mudguard
Chrome Engine Covers
Chrome Headlight
Brackets
Various Tank
Badges
Centre
Stand
Chrome Side
Stand
34PS Restrictor Kit -
Tachometer
Auxiliary Power
Socket
Shop our online store TRIUMPHeSTORE.com
Hermy's is a Triumph Triple Connection Stocking Dealer
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Click on
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ENGINE |
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Type |
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Air-cooled, DOHC, parallel-twin, 360º firing interval |
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Capacity |
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790cc |
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Bore/Stroke |
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86 x 68mm |
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Compression Ratio |
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9.2:1 |
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Fuel System |
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Twin carburettors with throttle position sensor and electric carburettor heaters |
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Ignition |
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Digital – inductive type |
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TRANSMISSION |
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Primary Drive |
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Gear |
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Final Drive |
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X ring chain |
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Clutch |
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Wet, multi-plate |
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Gearbox |
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5-speed |
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CYCLE PARTS |
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Frame |
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Tubular steel cradle |
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Swingarm |
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Twin-sided, tubular steel |
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Wheels |
Front |
36-spoke, 19 x 2.5in |
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Rear |
40-spoke, 17 x 3.5in |
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Tyres |
Front |
100/90 R 19 |
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Rear |
130/80 R 17 |
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Suspension |
Front |
41mm forks |
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Rear |
Chromed spring twin shocks with adjustable preload |
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Brakes |
Front |
Single 310mm disc, 2 piston caliper |
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Rear |
Single 255mm disc, 2 piston caliper |
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DIMENSIONS |
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Length |
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2250mm (88.6in) |
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Width (Handlebars) |
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860mm (33.8in) |
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Height |
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1105mm (43.5in) |
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Seat Height |
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775mm (30.5in) |
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Wheelbase |
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1493mm (58.8in) |
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Rake/Trail |
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29º/117mm |
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Weight (Dry) |
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205kg (451lb) |
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Fuel Tank Capacity |
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16 litres (4.2 gal US) |
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PERFORMANCE |
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(MEASURED AT CRANKSHAFT TO DIN 70020) |
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Maximum Power |
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62PS (61bhp) at 7,400 rpm |
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Maximum Torque |
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60Nm (44.3ft.lbf) at 3,500 rpm |
Two Year Unlimited Mileage Warranty
Riders Association Triumph Membership Included
Visit our local RAT Pack Web Site: RoyalRATPack.Com
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69 Centre Street, Route 61
Port Clinton, PA 19549-0065
+1(610) 562.7303 (voice)
+1(610) 562.5481 (24 hour fax)
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