Price £1,399.00


Deposit £139.90

Buy Now



Back in 2007 Stomp were the first to take the legendary YX140 engine and squeeze it into a Pit Bike named “SuperStomp 140”. This absolute killer combination of an aftermarket frame and bonkers engine put Stomp firmly on the map. Ever since, Stomp fans and customers have been going crazy for their pit bikes, making Stomp a globally recognised brand.

The Z3R-140 continues this epic motorcycle brand legacy. It is still powered by that immense 4-stroke thumping single cylinder YX140. The engine is ‘exclusive to Stomp’ being the SR140C Z40 model producing 2hp more than any other YX140 engine on the market. If you look after the SR140C, it will prove a very reliable and affordable engine to run. 


Colours change and graphics kits are available, call for the latest details.

Key Features

The chassis is a lightweight single backbone frame with cradle to keep the bikes mass down. This makes it faster and nimbler than many other brands focusing on MX looks at the cost of performance. This is of course the “R” version of the bike which stands for “Race” and that’s exactly what this bike was designed for. You can literally take it out for the crate, PDI it then enter into a race day/series. The bike features significant upgrades such as the lightweight alloy swing arm, Nitrogen filled fully adjustable DNM rear shock and SP 735 fully adjustable USD forks. This flexibility allows you to set the bike up for the track you are riding, along with finer adjustments for rider weight.

The Z3R follows the trend for larger pit bikes, more space on the bike, yet still a lot of fun to throw around. Aggressive visual cues, clean lines and highly distinctive factory graphics complete a well-balanced looking bike that’s tasteful yet means business. This is Stomps flagship model culminating decades of engineering knowhow, refinement and race pedigree, basically it’s the best of the best.

This is a true Surron killer for a fraction of the money, so TURN UP THE VOLUME AND SMELL THE PETROL BRAAAP!


  • Stomp Racing SR140C Z40 race cam
  • Start-in-gear, all-up 4 speed gearbox
  • 14hp at rear wheel
  • 26mm race carb with double foam filter
  • Aluminium shot blast finished cases with Stomp logo
  • CNC oil cooler with braided steel hoses
  • SDG2 heavy duty cradle frame for ultimate stiffness and control
  • Removable rear subframe & bolt on engine hangers
  • Alloy sump guard / bash plate
  • 410mm alloy swing arm
  • SP 735mm cnc machined usd fully adjustable oil filled forks
  • Drop forged black anodised triple clamps (yokes)
  • DNM nitrogen filled 290mm piggy back shock
  • 14/12 sdg wheels with steel rims for strength
  • rim lock in rear wheel
  • Kenda tyres
  • Improved and revised light-weight brake master cylinders and calipers
  • Vented light-weight rotors
  • Brake snake to protect the rear brake pedal
  • Alloy oval exhaust muffler
  • Mandrill bent big bore 32mm OD race pipe
  • Features full length alloy heat shield for style and protection
  • Pro-taper style minibike bars
  • Renthal style soft rubber grips
  • Forged alloy clutch & brake levers
  • Stomp logo cnc machined engine side cases
  • 420 chain with engraved alloy/nylon chain guide
  • 420 41t lightweight durable rear sprocket
  • 420 16t front sprocket
  • Fold back gear selector
  • NEW upgraded PRO footpegs
  • NEW reinforced poly resin 5.5 ltr fuel tank with alloy cnc filler cap
  • NEW revised firmer seat with Stomp logo
  • NEW Detroit hi impact polypropylene plastics
  • Wrap around crf number board with front brake pipe tidy
  • New Stomp race graphics kit with Stomp race sponsor’s logos
  • Seat height 82cm
  • Dry Weight 71kg
  • Weight limit 15 stone

    Colours and specification are subject to change without notice
    All pit bikes come with a 30 day parts only warranty.


Maintenance Information

2 HOUR SERVICE After 2 hours carry out the following checks & procedures:
- Drain oil & replace with Putoline DX4 semi synthetic 10w 40 4-stroke engine oil
- Check all nuts & bolts & tighten where necessary (use PDI data as reference)
- Check flywheel nut - Check wheel spokes (especially rear wheel drive side) & tighten where necessary
- Re-Adjust throttle cable & clutch cable if required
- Re-tension chain - Check wheel bearings for any sign of wear of free-play
- Check brake calliper operation & brake pad wear
- Check spark plug gap ~0.6mm-0.7mm
- Check tyre pressures
- Do not over rev your engine as you may cause damage to valves. This is particularly applicable where an inner rotor kit is used. Under load the engine is capable of revving into major valve bounce that can cause permanent damage to your engine. If you feel the power dropping off or start to hear valve bounce it is critical that you change up a gear or ease off the throttle.
- It is good practise to carry out the above checks on a regular basis, ideally each time you ride your machine. We advise an oil change after every 10 hours use.
- Do not stamp through the gears – always use the clutch.
- If you miss a gear do NOT stamp into gear from high engine revs.
- Do not drop your clutch heavily, or slip it unnecessarily.
- Do not allow your air filter to fill with fuel – this can occur by incorrect float height setting – see above, or the bike falling onto its side.
- If the engine back-fires while the air filter is filled with fuel, it may ignite
– check air filter regularly while riding

All pit bikes come with a 30 day parts only warranty.

Colours and specification are subject to change without notice.

Price £1,399.00


Deposit £139.90

Buy Now