The Bonneville Shop is your one-stop shop for Triumph Bonneville aftermarket parts. Common maintenance is essential to keep your classic Brit bike up and running including valve adjustments, oil changes, and carb tuning. You should also replace worn items like chains, sprockets, and tires. Whether you’re performing regular maintenance or restoring a barn bike, you can find what you need. Electrical, engine parts, transmission, oil and air, exhaust and cables ship for free to the lower 48. Actually, all parts ship for free to the lower 48 with fast and reliable options for world-wide Triumph riders.
- Rule #1 – Get a Parts Book: The Case for the Parts Catalog as the Most Important Tool in the Cabinet “Without the parts book, sourcing the correct parts for your vintage BSA, Norton, or Triumph motorcycle becomes an adventure, even for the experienced enthusiast.” We’re here to help but starting with part numbers will get you most of the way there.
- Triumph Bonneville Aftermarket Parts for Performance: Options include high-compression pistons and performance exhaust systems.
Triumph 750 T150 BSA A75 Exhaust Valve G&S UK-Made 1969-1972 PN# 70-6423 GS E6423 V271
$49.14 – $140.00Price range: $49.14 through $140.00
Triumph 750 T150 BSA A75 Inlet Valve G&S UK-Made 1969-1972 PN# 70-6422 GS E6422 V270
$49.14 – $135.04Price range: $49.14 through $135.04
Triumph 500 T100 Exhaust Valve G&S UK-Made 1959-1966 PN# 70-4013 GS E4013 V188
$48.43 – $152.12Price range: $48.43 through $152.12
Triumph 500 T100 Inlet Valve G&S UK-Made 1959-1966 PN# 70-4012 GS E4012 V187
$44.15 – $151.38Price range: $44.15 through $151.38
- Triumph Bonneville Maintenance items: Replacement components like filters, gaskets, and electrical parts are readily accessible.
Triumph Exhaust Clamp Panhead Screw(s) 10-32 TPI PN# 21-2230
$6.95 – $12.14Price range: $6.95 through $12.14
- Customization: Triumph Bonneville aftermarket parts including seats, handlebars, and cosmetic accessories allow for personalization
Triumph Norton BSA Universal Clamp on Mirror(s) 8 inch Stem PN# 60-0005 T
$21.80 – $38.28Price range: $21.80 through $38.28
Check out our tech article What exactly is a 1978 Triumph Bonneville? T140, T140V, T140E, 1978.5

Triumph BSA Late 28 TPI Brake Adjuster (1) PN# 82-7387-2nd
Original price was: $16.36.$14.59Current price is: $14.59.
Triumph 750 T150 BSA A75 Exhaust Valve G&S UK-Made 1969-1972 PN# 70-6423 GS E6423 V271
$49.14 – $140.00Price range: $49.14 through $140.00
Triumph 750 T150 BSA A75 Inlet Valve G&S UK-Made 1969-1972 PN# 70-6422 GS E6422 V270
$49.14 – $135.04Price range: $49.14 through $135.04
Triumph 350 500 650 CWC Stainless Rear Wheel Spoke Set Up To 1970 PN# TBS-5080-2nd
Original price was: $199.72.$169.59Current price is: $169.59.


