STOMP Z3 140

VISIT Our New WPB Site Page by clicking Here
14/17 Wheel Version Shown

14/17 Wheel Version Shown

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 
seriously FAST World-Class Race Winning Pit Bike.

Price £1149
Including Delivery

Price £1199
Including Delivery



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 2021 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 2021 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.



17hp Dyno & Race Tested Latest Generation Engine
26mm Race Carb with 2 stage race foam filter
z40 Factory Fitted Race Camshaft giving Extra 2hp
N1234 all up gearbox
High Capacity Race CNC oil cooler
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."

Stomp z140 CRF70