Z3 140R

STOMP Z3 140 R 12/14 Wheels

£1399 Including Mainland UK Delivery 

The 2024 Z3 140R has a New Set of Exclusive Detroit Plastics for 2024.

  New Features for 2024 Include Polished Hubs, HSK Brakes and Pro Footpegs.

The Stomp Z3 140R sets itself up as a Race ready bike straight from

the Box. Features such as Maxxis Tyres, SPK Fully Adjustable Forks

DNM Fully Adjustable Rear Shock are standard and represent excellent

value over Retro Fitting these items to a Standard

Stomp Z3 140 

Price Including Delivery


£49 Consists of Magnetic Sump Plug, Race Spark Plugs Engine Oil 



 STOMP Z3 140R z40 Race Report 

Only A Little "R" but a BIG difference in Specification

"STOMP Z3 140R 2024 Featuring the Exclusive z40 race camshaft factory equipped engine, Beefed up Crank Cases and Needle Roller Gearbox Bearings. The Z40 Race Camshaft is only fitted to Stomp and WPB engined bikes, no other UK Pitbike engine manufacturer fits this legendary camshaft to their engines and the 17Hp at rear wheel in Stock form is plenty to scare the Pants off the unsuspecting!"

The 2024 Z3 140R has a New Set of Exclusive Detroit Plastics for 2024.

  New Features for 2024 Include Polished Hubs, HSK Brakes and Pro Footpegs.  

The Z3 140R still boasts the ‘exclusive to Stomp’ SR140C/Z-40 cam engine. Stomp buy in the YX140 and then fettle the engine with stiffened valve springs & a high lift race cam (known as the z-40 cam). The result is 2 HP more than any other YX140 engine on the market. It might not be quite Zhongshen 155 territory, but its most of the way there and significantly cheaper to install than the Z155 which would see retail prices creeping over the £1500 mark. If you look after the SR140C, it will prove a very reliable and cheap engine to run.

Stomp still retain the optional big wheel version (17/14) for those more into field hacking who need that extra stability in muddy conditions.

This is of course the ‘R’ model which means you get fully adjustable suspension & quality MX spec tyres making it ready to race out of the crate.


Race CDI

High Capacity Race Ignition coil


Exclusive Race Engineered Race Geometry Frames

New HiTor SuperSwing Alloy Swingarm System

Swingarms includes provision for 

High Torsional strength wheel spacers

and SuperDry Sealed Wheel bearings

High Impact Lightweight Sumpguard

Race Engineered Rear Subframe 


SPK Fully Adjustable Titanium Finished Anodise Forks

Drop Forged Titanium Anodised Triple Clamps

 DNM Long Travel Rear Shock

AlloyRear Swingarm 410mm

SuperSwing Frames/Swingarms to take 17/14 wheel upgrades

Replaceable Steel SuperShock Shock pivot bearings

 Wheels and Tyres 

12" rear 14" front KENDA MX Tyres

SuperStrong and Light Steel Rims

SDG pattern SuperStrong hubs

Recessed & Sealed SuperDry Long Life Wheel Bearings

Polished Alloy Hubs


SuperStop Wavey Discs 210mm front and 190mm rear

Single pot Front and Single Pot Rear wheel cylinder

Steel Braided Hose Lines

EBC pattern pads front and rear

HSK Racing Brakes


KMC 420 pitch Chain

41 tooth rear sprocket

15t front sprocket

Wrap around SuperSlide Swingarm Chain Sliders

New SuperGuard Rear Shock Mud Deflectors

 Bars & Controls 

Titanium Alloy Minibike Pro Taper style Bars

Foldback Levers Adjustable Reach

Soft Grey SuperGrip Bar grips

Foldback gear Shifter

Heavy Duty 16mm Kickstart Shaft

"Price vs spec? Stomps predecessor, the Z140-R and Stomp Z2 140R were the best-selling race ready 

pit bike in the UK for 2 years. The Z3R-140 now takes Stomps winning 

formula & punts into the stratosphere, pretty much annihilating anything else 

on the market in the same price bracket. As per the predecessor its race ready 

out of the crate featuring fully adjustable SPK forks & DNM (Taiwanese) rear shock. 

Kenda Carlsbad MX spec tyres keep you in the ruts whilst other upgrades to 

note are a full set of Factory Takegawa graphics. The 

2017 Z3R-140 was born out of racing Bucci’s in the nationals and the results 

on the track tell the full story. The Z3R-140R will give more bang for 

your buck than any other race-ready machine and if you are thinking about 

taking it straight to the track, look no further "

N1234 all up gearbox

High Capacity Race CNC oil cooler


17hp Dyno & Race Tested Latest Generation Engine

26mm Race Carb with 2 stage race foam filter

z40 Factory Fitted Race Camshaft giving Extra 2hp