Big 17/14 Wheels

 The ultimate brand from back in the day is once again on point doing what it does best! First out of the starting gate is the Dirty B 140. Loud isn’t the word, if you are looking to stand out, the Dirty B smashes it. Bright orange with contrasting black, striking graphics and a great spec to boot. The YX140 engine is extremely tractable, fast & reliable with as much bottom end grunt as you are likely to need. All-up gearbox for seamless shifting, light weight alloy swing arm, upside down forks and a really trick stainless steel big bore power pipe. Everywhere you look the Thumpstar Dirty B is dripping with attention to detail & quality. Light weight brake rotors, HSK racing callipers, forged brake & clutch levers, brake snake, rear rim lock, forged triple clamps, motocross kick start etc etc. This bike has been designed to mean business straight out of the crate.

 1/2 Price Options 


TTR style plastics
Thumpstar YX 140cc engine with Molkt 26mm carb N1234 gear box
Race head with Z40 cam and big valves
Chromolly double tubed cradle frame with Black powder coated finish
Alloy swing arm anodised black
17/14 SDG wheels with BLACK hubs and matt black rims
Rear rim lock
Thumpstar MX tyres
USD front forks anodised black with chromed stanchions
Forged alloy yokes with Thumpstar logo
290mm racing rear shock with 800lbs spring 
Stainless steel big bore exhaust with polished race muffler
KTM style MX kick start
Black anodised alloy gear shifter
Braided brake hoses with big 1 pot race calipers 
Forged alloy brake and clutch levers
KMC 420 gold chain
Reinforced poly-resin tank with black CNC alloy filler cap
High impact polymer plastics with Dirty B 3m quality graphics
Stainless steel foot pegs
Brake snake
6061 alloy bars Black finish
Thick foam bar pad with Dirty B cover
Pro Taper style grips
Two tone gripper seat with logo
Seat height 74cm
Weight limit 16 stone