Get the right information before you order the part.
Small workshop calculators built for and by mechanics. Decode any number on the cases. Classify a bore. Identify a crank journal. Sweep a gear ratio. Print a torque sheet. No login. No saved data. They just answer.
VIN Decoder
Paste any Triumph engine, frame, or VIN and get the exact year, model, era, and full factory spec sheet.
Covers 1950–1988Tool · boreBore Spec Finder
Measure your cylinders at six points and instantly classify oversize, taper, out-of-round, and the right piston to order.
4 engine families · 5 oversizesTool · crankCrank Journal Identifier
Mic both rod journals to get the crank family, current grind, wear state, and the right shell-bearing oversize.
3 families · 5 grind sizesTool · gearGear Ratio Calculator
Pick your bike, swap front and rear sprockets, and watch top-speed and torque trade-offs update live, gear by gear.
14 models · live recalcTool · techTechnical Specifications
Every torque value, oil capacity, electrical detail, and chassis spec for 24+ models. Print a single sheet for the bench.
24 models · printableTool · edAsk Ed · the virtual parts counter
Still stuck? Ed has the catalog, the Tinks Tips, and the service bulletins. Ask him a question; get a part.
Open 24/7 · cites his sources