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Rider Height
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scrambler / default rider 183 cm

BSA Motorcycles Thunderbolt vs Triumph TR5T Trophy Trail ergonomics

BSA Motorcycles Thunderbolt and Triumph TR5T Trophy Trail land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.

Fit verdict

BSA Motorcycles Thunderbolt

95Comfortable

All contacts reached

Triumph TR5T Trophy Trail

95Comfortable

All contacts reached

The two bikes are close enough that posture preference matters more than the overall score.

Rider fit: reaching the ground

The BSA Motorcycles Thunderbolt has a 815 mm seat; the Triumph TR5T Trophy Trail sits at 813 mm, within a few millimetres of each other. As a rule of thumb you flat-foot a bike when your inseam roughly matches its seat height: about 82 cm for the BSA Motorcycles Thunderbolt and 81 cm for the Triumph TR5T Trophy Trail.

Geometry snapshot

Geometry comparison for BSA Motorcycles Thunderbolt and Triumph TR5T Trophy Trail
SpecBSA Motorcycles ThunderboltTriumph TR5T Trophy Trail
Seat height815 mm813 mm
Wheelbase1,466 mm1,384 mm
Wet weight185 kg159 kg
Displacement334 cc490 cc

Posture metrics

Knee angle

BSA Motorcycles Thunderbolt
Sport (58.1 deg)
Triumph TR5T Trophy Trail
Sport (57.9 deg)

Hip angle

BSA Motorcycles Thunderbolt
Neutral (93.6 deg)
Triumph TR5T Trophy Trail
Neutral (95.4 deg)

Elbow angle

BSA Motorcycles Thunderbolt
Relaxed (143.3 deg)
Triumph TR5T Trophy Trail
Relaxed (143.3 deg)

Torso lean

BSA Motorcycles Thunderbolt
Neutral (12.3 deg)
Triumph TR5T Trophy Trail
Neutral (11.1 deg)