STOMP Z3-140, 140CC PIT BIKE

£1,099.99 GBP
Regular price
Unit price
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Product Info

The STOMP Z3-140 Racing Pit Bike features the exclusive SR140C Z40 race cam engine, offering 14 hp at the rear wheel. Modified from a standard YX140 engine with stiffened valve springs and a high-lift Z40 cam, it delivers more power than other YX140 engines while remaining reliable and cost-effective. Updated pro footpegs, polished hubs, and a stylish Stomp graphics kit complete the new look, making it a high-performance yet affordable racing pit bike.
Features

Stomp Racing SR140C Z40 race cam engine
Start-in-gear, all-up 4-speed gearbox
26 mm race carburettor with double foam filter
Aluminium shot-blast engine cases with Stomp logo
CNC oil cooler with braided steel hoses
SDG2 heavy-duty cradle frame for stiffness and control
Removable rear subframe & bolt-on engine hangers
Revised lightweight TIG-welded 430 mm swing arm
Extended 735 mm CNC-machined USD oil-filled forks
Drop-forged black anodised triple clamps (yokes)
Nitrogen-filled 290 mm piggyback shock with steel bushes
14/12 SDG wheels with steel rims
Durable Innova MX tyres
Lightweight vented brake rotors with improved master cylinders and calipers
Alloy oval exhaust muffler and mandrill-bent big bore 32 mm OD race pipe
Full-length alloy heat shield for protection and style
Pro-Taper style minibike handlebars with Renthal soft rubber grips
Forged alloy clutch and brake levers
420 KMC chain with engraved alloy/nylon chain guide, 16t front & 41t rear sprockets
Fold-back gear selector
Upgraded PRO footpegs
Reinforced 5.5 L poly-resin fuel tank with alloy CNC filler cap
Revised firmer seat with Stomp logo
Detroit hi-impact polypropylene plastics
Wrap-around CRF-style number board with front brake pipe tidy
Stomp race graphics kit with sponsor logos
Specifications

Engine: Stomp Racing SR140C Z40 race cam
Power: 14 hp at rear wheel
Gearbox: 4-speed, start-in-gear
Frame: SDG2 heavy-duty cradle
Swing Arm: TIG-welded 430 mm lightweight
Forks: 735 mm CNC-machined USD oil-filled
Shock: Nitrogen-filled 290 mm piggyback with steel bushes
Wheels: 14/12 SDG steel rims
Tyres: Durable Innova MX pattern
Brakes: Lightweight vented rotors, upgraded master cylinders
Exhaust: Alloy muffler with mandrill-bent 32 mm OD race pipe and full-length heat shield
Seat Height: 82 cm
Fuel Tank: 5.5 L reinforced poly-resin with alloy CNC filler cap
Weight: Dry weight 71 kg
Maximum Rider Weight: 15 stone (~95 kg)
Warranty Info

30-day parts-only warranty
Shipping & Delivery

Bikes are dispatched 1-2 days after we receive your order unless it is a pre-order or it is stated on our website that delivery times will be delayed. UK mainland delivery is a next day service. Delivery to Northern Ireland, Ireland and UK islands is usually a 3-5 day service from dispatch.

Shipping cost calculated at checkout.
STOMP Z3-140, 140CC PIT BIKE
£1,099.99 GBP
Regular price
Unit price
per

STOMP Z3-140, 140CC PIT BIKE

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Frequently Asked
Questions

Who is the Z3-140 suitable for?

The Z3-140 is suitable for older children or adults under 15 stone (~95 kg) looking for a high-performance racing-style pit bike.

How powerful is the bike?

It produces 14 hp at the rear wheel, making it more powerful than standard YX140 engines due to the exclusive Z40 race cam.

Can this bike be used for racing or off-road riding?

Yes. With durable MX tyres, upgraded suspension, reinforced frame, and lightweight swing arm, it’s suitable for off-road tracks and competitive racing.

What warranty does it come with?

All STOMP pit bikes, including the Z3-140, come with a 30-day parts-only warranty, covering manufacturing defects but not normal wear items.

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