Overview:                                          The JTrax is a JT Custom product that is not only street legal, but, when stripped of its street gear, is ready to race. Starting with a stock Yamaha XS 650, JT Custom modified the frame, rebuilt the engine, upgraded the wheels, brakes, ignition, suspension, and replaced the tank, fenders, and body parts.

Tech Sheet  

Engine 

Year & Type: ’75 Yamaha XS

Displacement: 753cc (45 cubic inch)

Builder: JT Custom

Cases: Stock

Flywheels: 276 degree

Connecting Rods: Polished

Pistons: Wiseco

Cylinders: LA Sleeve Melanite Liners

Heads: Ported by JT Custom

Camshaft: JT Custom Special Grind

Valves: Black Diamond

Oil Pump: Stock

Carbs: (2) 36mm Mikuni TM

Air Cleaner: K&N

Ignition: Boyer

Exhaust: JT Custom

Transmission  

Type: 5 Speed

Clutch: Barnett

Frame  

Year & Type: ’75 XS Modified by JT Custom

Rake: 28 degrees

Stretch: None

Forks  

Triple Tree: JT Custom

Tubes: Showa

Extension: None

Suspension  

Swingarm: Stock

Shocks: Kogo

Final Drive: 530 Chain

Wheels, Tires, Brakes  

Front

Builder & Size: Excell 19 x 2.15

Tire: Dunlop

Caliper: Brembo

Rotor: Stock with JT Custom Drilling  

Rear

Builder & Size: Excell 18 x 2.5

Tire: Dunlop

Caliper: Brembo

Rotor: Stock with JT Custom Drilling

Essentials  

Bars & Risers: Flanders, Stock

Cables: Barnett

Headlight: K&S

Fuel Tank: Fibreglass XR Style

Fenders: Fibreglass XR Style

Hand Controls: Brembo/K&S

Foot Controls: Stock/Brembo

Pegs: Stock

Electrical: JT Custom

Seat: XR Style