Triumph Bonneville T100 (908MD) — Retro Classic
NastyNils / Triumph Press

2002–2004 · Retro Classic · Buyer's Guide

Bonneville T100 (908MD)

3.5 / 5 NastyNils Rating · against its class

The Real Bonneville Returns

The Machine's Character

The T100 landed in 2002, a year after the reborn Bonneville, and does the name properly with an air-cooled 790cc parallel twin fed by twin carburetors, a 360-degree crank giving that even, thumping beat riders remember from the old British verticals. It makes 61 hp and 44 lb-ft, and none of it comes wrapped in bulky radiators or plastic. A simple steel frame, telescopic fork, twin shocks, and wire-spoked wheels do the work. This is the design that scores a flat 10 on retro for a reason. The styling isn't a costume over modern hardware. It reads as the genuine article from every angle.

It rides easy and neutral, with a low 30.5 in seat and light 100/90-19 front that make it approachable for a first big bike or a tenth. The reward here is character and honesty, not speed. Chrome, paint, and detail hold up when you look close, and running costs stay low. Just go in knowing what it is. Carbureted and 5-speed, it wants a rider who values feel over feature lists. If you need modern rider aids or a rush of top-end, this bike will feel too calm and too old-school for you.

Hard Numbers

Spec sheets don't ride bikes, but they set the baseline.

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Key specifications
Power 61 hp (46 kW)
Torque 44 lb-ft (60 Nm)
Displacement 790 cc
Engine Parallel twin
Cooling Air-cooled
Gearbox 5-speed
Front tire 100/90-19
Rear tire 130/80-17
Seat height 30.5 in (775 mm)
Dry weight 452 lb (205 kg)
Fuel capacity 4.2 gal (16 L)
An elevated view of a deep autumn canyon, likely Big Cottonwood Canyon, Utah. Steep rocky cliff faces and forested mountain ridges frame a narrow valley where a winding two-lane road passes below. Deciduous trees display full autumn color — gold, orange, and amber — interspersed with green conifers on the steep slopes. A single dark vehicle is visible far below on the road. Snow-dusted mountain peaks rise in the background under a partly cloudy sky.
Alex Moliski / Pexels

The Truth on the Street

This picture comes from years of listening: paddock conversations, long chats with owners at gas stops and club nights, and the messages riders send me directly. On this early T100, the pattern is consistent. Owners talk mostly about longevity and an easy, confident ride. Complaints are few, and each one comes up only occasionally.

Built to last, easy to trust

The theme owners come back to most is durability. Riders describe the air-cooled parallel twin as over-engineered and say it runs to high mileage with nothing more than basic maintenance. Handling comes next. Owners say the bike feels light and narrow, corners predictably and gives them real confidence on twisty roads. Some add that it stays comfortable through long days, even two-up, with a seat and suspension that soak up bumps. A few describe the engine as gentle and unintimidating, happiest at a relaxed pace.

The brake and the brightwork

The gripes are isolated rather than recurring. One owner points to the single-disc front brake, which needs a firm squeeze and lacks the power and feel of modern units. Another warns that the chrome and paint can pit and corrode unless the bike is cleaned regularly and kept out of the weather.

Known issues

  • Starter Idler Gear Boss Failure

    engine rare

    A boss in the crankcases where the starter idler gear mounts can fail, requiring major engine repair. Design was updated in 2006.

  • Electrical Issues (Coil Pack Failure)

    electrics occasional

    Older bikes may experience coil pack failures and electrical sensor issues, often due to corroded connectors and dodgy grounds.

  • Rear Spoke Breakage

    chassis occasional

    Spokes on the rear wheel can break, potentially causing a puncture. The design was later revised. Some owners recommend zip-tying the spokes as a precaution.

The Expert Benchmark

Where this Triumph Bonneville T100 pulls ahead of — or falls behind — its rivals on the numbers, and the typical bike in its class on character.

What kind of bike this is — character vs. the class

This bike Class average

The 'Should I Buy It?' Score

Forget spec-sheet bragging. Here's who the Bonneville T100 is actually built for.

A scenic view of Angeles Crest Highway winding through rugged Southern California canyon terrain. Rocky mountainsides with golden earth tones frame the asphalt road with tight sweeping curves. Double yellow center line visible, sparse vegetation along the shoulders, clear blue sky with white clouds. Daylight, dry conditions. Iconic location for canyon-road enthusiasts.
Josh Sorenson / Pexels

Best retro motorcycle for road trips?

If your ideal weekend is a small-town route at a calm rhythm on something that looks the part, the T100 is built for exactly that. Its easy manners and honest classic style fit the miles you want to ride.

Made for Acadia National Park · Austin / Handbuilt Motorcycle Show · Blue Ridge Parkway

Best cruiser for Sturgis?

You'll get the sound, the ritual, and the character, and the T100 turns heads with genuine heritage looks. Just know it's a light retro twin, not a big-inch cruiser, so temper the low-end grunt you may expect.

Made for A1A — Florida Atlantic Coast · Black Hills / Sturgis Rally Hub · Daytona Main Street / Bike Week

Best motorcycle for Texas Hill Country?

For relaxed Hill Country loops and a BBQ stop, the T100's neutral handling and low seat make it a friendly companion. If you want sharp, sporty pace through the twisties, this one asks you to slow down and enjoy it.

Made for Austin / Texas Hill Country · Twisted Sisters · Austin / Handbuilt Motorcycle Show