Dirty B 160cc Now Discontinued 

Please see the New 
Thumpstar Dirty S 170cc CLICK HERE

Thumpstar 160 is back! The ultimate brand from back in the day is once again on point doing what it does best!

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.
Size is Similar to the well Known CRF50 type Pitbikes Seat Height of 74cm makes it ideal for teenage riders. Adult riders are equally suited to ride this size as this is the traditional Pitbake size that started the sport back in the day.

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 and all for a very low price.


TTR style plastics
19hp dyno & race tested latest generation ZS155 engine
Race head and big valves
Chromolly double tubed cradle frame with orange powder coated finish
Alloy swing arm anodised black
14/12 SDG wheels with orange 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
MX kick start
Orange 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
Thumpstar race foot pegs
Brake snake
6061 alloy bars with orange powder coated 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