From Chuckhawks,
Rider magazine did a road test of the new Bonneville in the March 2001 issue, and reported the following performance: Acceleration, 0 to 60 mph in 5.5 seconds; top gear roll-on, 40 to 60 mph in 5.41 seconds; braking, 60 to 0 mph in 151.6 ft.; Average mpg, 43.8.
Cycle World magazine took a new Bonneville to the drag strip and recorded a best 1/4 mile time of 13.83 seconds at 95.34 mph. They reported a 0-60 time of 4.9 seconds, and the bike's top speed was 105 mph. Fuel mileage was 45 mpg.
Steve did some performance tests of his own, and here are the results: 0-60 mph in 5 seconds; 0-100 mph in a little under 16 seconds; top gear roll-on, 60-80 mph in 6.3 seconds. The top speed in the various gears is as follows: 1st=45 mph; 2nd=65 mph; 3rd=81 mph; 4th nearly 100 mph; 5th=115 mph @ 7,400 rpm. Steve's average mpg during his first 1,000 miles was approximately 50 (in U.S. Gallons).
Rider also took the Bonneville to Borla Performance, where it was run on a Dynojet dynamometer. They reported that the stock Bonnie motor delivered a maximum of 55 rear wheel horsepower at 7,350 rpm, and 40.7 pounds-feet of peak torque. Torque remains above 35 lbs-ft from about 2,750 rpm out to the red line. Horsepower increased in a very linear manner, exceeding 40 at about 5,500 rpm. These seem like pretty good numbers, consistent with the over-square configuration of the engine.
Triumph reports that their accessory mufflers, combined with their carburetor jet kit, add about 8 to 10 horsepower. Steve wants the new low restriction mufflers as soon as they are available in Australia. He finds the performance quite adequate, but really wants that extra horsepower, which would give his bike about the same power to weight ratio as his riding mate's old Kawasaki Z1.
