Z3 140

STOMP Z3 140 

12/14 Wheels

£1099 Including Mainland UK Delivery

STOMP Z3 140 

17/14 wheels

£1199 Including Mainland UK Delivery

14/17 Wheel Version Shown

14/17 Wheel Version Shown

Z-40 Race Camshaft

Factory Fitted and Race Tuned for Extra Brake Horse Power

The New STOMP Z3-140 is the Result of Stomps Race Winning experience and 

continued design development, it is the development of the

Z-140 and the Z2-140

Now With...




When you take the combination of 2 Previous Race Proven bikes and race with Bucci’s 

on the track, Stomp have stepped up the game & proven yet again you 

do not need to spend inordinate amounts of money to have a 

seriously FAST World-Class Race Winning Pit Bike.


Price Including Delivery


Price Including Delivery


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



17" 14" Big Wheel Tyre and Tube Set

So that younger riders can grow with their bike

 STOMP Z3 140 z40 Race Report 

"STOMP Z3 140 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 Z3-140 has been Upgraded to Now Include Polished Allow Hubs and

HSK Racing Brakes front and rear and Pro Footpegs. The New Detroit Plastics add something new

to the Race scene and are Unique to Stomp

The Z3-140 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 £1000 mark. If you look after the SR140C, it will prove a very reliable and cheap engine to run.

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


Race CDI

High Capacity Race Ignition coil


Exclusive Race Engineered Race Geometry Frames

New HiTor SuperSwing Swingarm System

Swingarms includes provision for 

High Torsional strength wheel spacers

and SuperDry Sealed Wheel bearings

High Impact Lightweight Sumpguard

Race Engineered Rear Subframe 


Titanium Finished Anodise Forks

Drop Forged Titanium Anodised Triple Clamps

 Long Travel Rear Shock

Rear Swingarm 410mm

SuperSwing Frames/Swingarms to take 17/14 wheel upgrades

Replaceable Steel SuperShock Shock pivot bearings

 Wheels and Tyres 

12" Rear 14" Front MX Innova Pattern Tyres


14" Rear 17" Front Wheels with MX Innova Pattern 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



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

Forged Alloy Levers

Soft Grey SuperGrip Bar grips

Foldback gear Shifter

Heavy Duty 16mm Kickstart Shaft

Pro Footpegs

Stomp Z3-140 Review

"Price vs spec? Stomps predecessors, the Z-140 and Z2-140 were the best-selling pit bike 

in the UK for 4 years. The Z3-140 now takes Stomps winning formula & punts it 

into the stratosphere, pretty much annihilating anything else on the market 

in the same price bracket. It’s £6,000 Bucci performance for under a grand??? 

How the **** have they done this? It’s simple, by racing Bucci’s on the track Stomp 

have stepped up the game & proven yet again you do not need to spend inordinate 

amounts of money to have a seriously FAST world-class pit bike. 

The results on the track tell the full story, the Z3-140 will give more bang 

for your buck than any other machine out there and if you are thinking 

about taking it straight to the track, why not take a look at 

the Z3R cus that monster is race ready out of the crate and 

a full race replica of Troy Becks Podium winning machine."

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