Stomp Z3-140 140cc Big Wheel Pit Bike
£1,199.00
Low stock – only 3 remaining
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Description
Best for taller riders wanting full-size feel with pit bike punch
Big wheel setup for more stability and better rollover
Race-tuned 140cc engine with serious track performance
Top of the Stomp pit bike range
A race-ready 140cc pit bike with the stance and feel of a much bigger machine
Why choose the Stomp Z3-140 Big Wheel?
The Stomp Z3-140 Big Wheel takes everything that makes the standard Z3-140 such a serious bike and adds a larger wheel setup for riders who want more height, more stability and a more full-size motocross feel.
With the same SR140C race engine, SDG2 chassis and upgraded suspension package, but fitted with 17/14 inch wheels, this is the natural choice for taller riders and those stepping across from full-size bikes.
In stock now with fast UK delivery
Big Wheels — Why They Matter
The switch from 14/12 to 17/14 inch wheels changes the feel of the bike significantly.
- Better rollover — handles bumps and rough terrain more easily
- More stability — feels more planted at speed
- Taller stance — better suited to bigger riders
It gives the Z3-140 Big Wheel a more full-size motocross feel while keeping the punch and fun of a pit bike.
Race-Tuned 140cc Engine
The Z3-140 Big Wheel uses the same exclusive SR140C Z40 race cam engine found in the standard Z3-140.
- Engine — SR140C Z40 race cam
- Power — approx. 14hp at the rear wheel
- Carb — 26mm race carb with double foam filter
With stiffened valve springs, race cam timing and a big bore pipe, this setup delivers stronger acceleration and sharper throttle response than a standard 140cc pit bike.
Manual Gearbox — Full Rider Control
The Z3-140 Big Wheel uses a full manual gearbox, giving riders complete control over power delivery and gear selection.
- Manual clutch — full control
- Gear shifting — proper pit bike race setup
- Progression — ideal for skilled and improving riders
This is built for riders who already know the basics and want more from the bike underneath them.
Built on the SDG2 Race Chassis
The Z3-140 Big Wheel is built on the proven SDG2 heavy-duty cradle frame, giving it the stiffness and control needed for faster riding.
- Frame — SDG2 heavy-duty cradle
- Subframe — Removable rear with bolt-on hangers
- Swingarm — 430mm TIG welded
- Seat Height — 84cm
This bigger setup gives the bike a more stable platform for taller riders and rougher terrain.
Suspension Built to Perform
The suspension package is identical to the standard Z3-140 — and that is a good thing.
- Front — 735mm CNC USD forks
- Rear — 290mm nitrogen piggyback shock
- Triple Clamps — Drop-forged anodised yokes
Combined with the bigger wheels, this gives the bike excellent composure and confidence at speed.
Brakes, Wheels and Grip
The Z3-140 Big Wheel keeps the same proven braking setup, matched to the larger wheel package.
- Brakes — Lightweight hydraulic setup with vented rotors
- Wheels — 17" front / 14" rear SDG steel
- Tyres — Innova MX pattern tyres
This gives strong grip, dependable braking and a more planted feel across rougher ground.
Built for Real Riding
The Z3-140 Big Wheel includes quality components throughout:
- Bars — Pro-taper style minibike bars
- Levers — Forged alloy
- Chain — 420 with guide
- Footpegs — Upgraded PRO
- Tank — 5.5L reinforced poly resin
- Plastics — Detroit hi-impact polypropylene
- Graphics — Stomp race graphics
This is a serious performance pit bike with a full-size edge.
Who Is the Z3-140 Big Wheel For?
The Z3-140 Big Wheel is designed for taller and more experienced riders who want a more stable, full-size feel without losing the punch and agility of a pit bike.
Perfect upgrade from the standard Z3-140 for bigger riders.
It suits riders coming from full-size motocross bikes, or anyone who wants the top Stomp pit bike package in its biggest, most capable format.
Not suitable for public roads. Always wear appropriate protective gear and ride responsibly.
Specifications
Engine SR140C Z40 race cam Power Approx. 14hp (rear wheel) Carb 26mm with double foam filter Frame SDG2 heavy-duty cradle Subframe Removable rear with bolt-on engine hangers Swingarm 430mm TIG welded Forks 735mm CNC USD Rear Shock 290mm nitrogen piggyback Triple Clamps Drop-forged anodised Wheels 17" front / 14" rear SDG steel Tyres Innova MX pattern Brakes Improved lightweight calipers and vented rotors Exhaust 32mm race pipe with alloy muffler Chain 420 with guide Sprocket 420 41T Seat Height 84cm Weight 71kg Max Rider Weight 15 stone -
Delivery & Returns