What causes Stator/charging system failure on the Triumph Street Triple?

Check battery voltage at idle, look for dim lights Estimated fix cost: $300-$600

What causes Throttle body sync issues causing rough idle on the Triumph Street Triple?

Listen for uneven idle, feel for surging at low RPM Estimated fix cost: $100-$200

Inspect weep hole under engine for coolant residue Estimated fix cost: $150-$350

Known issues to inspect before buying a used Triumph Street Triple. What to check and how much repairs cost.

SERIOUS

Check battery voltage at idle, look for dim lights

Fix cost: $300-$600

MODERATE

Listen for uneven idle, feel for surging at low RPM

Fix cost: $100-$200

MODERATE

Inspect weep hole under engine for coolant residue

Fix cost: $150-$350

☐Check service history and valve clearance records

☐Test ride for smooth throttle response throughout RPM

☐Inspect frame for crash damage or repainted sections

☐Verify charging voltage with multimeter at 3000 RPM

Solid engine, electrical gremlins on older examples