Trusted by 1,000+ UK riders • Fast UK delivery available

Stomp Z3R-140 Race Pit Bike
Stomp Pit Bikes

Stomp Z3R-140 Race Pit Bike

£1,399.00

Hurry, only 1 left in stock!

In Stock - Ready for Dispatch
✓ Authorised UK dealer
✓ Express Delivery Available
✓ Manufacturer warranty included
✓ UK parts & aftersales support
No reviews
Trustpilot

  • Description

    Stomp Z3R-140 Race Pit Bike – Quick Overview

    Best for: riders stepping into race-level pit biking.

    Engine: SR140C engine with Z40 race cam.

    Power: approx. 14hp at the rear wheel.

    Wheels: 14 inch front / 12 inch rear SDG steel wheels.

    Why riders choose it: race-tuned 140cc power, manual gearbox, upgraded suspension and serious track-ready components.

    Our view: a proper race-level 140cc pit bike for confident riders wanting more than a standard entry-level machine.

    The Stomp Z3R-140 is built for riders who want to go beyond entry-level pit bikes and step into proper race-level performance. With a race-tuned SR140C engine, Z40 race cam, SDG2 heavy-duty cradle frame and upgraded suspension, the Z3R-140 is designed for serious off-road use.

    Compared with standard 110cc and 120cc pit bikes, the Z3R-140 gives stronger acceleration, sharper response and a more controlled feel when riding harder.

    This is a proper manual race pit bike for riders who already have the basics dialled and want a machine that can handle faster riding, track use and more aggressive terrain.

    My Take as a British MX Rider

    The Z3R-140 is the kind of bike that starts to feel genuinely race-focused rather than just being a bigger beginner bike.

    The race-tuned engine, stiffer chassis and better suspension give the rider more confidence when pushing harder or riding rougher tracks.

    If the rider is already confident on manual bikes and wants a proper step towards track-focused pit biking, the Z3R-140 is a strong choice.

    Why Upgrade to the Stomp Z3R-140?

    Feature Standard Pit Bikes Stomp Z3R-140
    Engine Often standard 110cc / 120cc / 140cc setups SR140C with Z40 race cam and approx. 14hp rear wheel power
    Purpose Learning, progression or casual off-road riding Race-level pit biking and harder track-style riding
    Suspension Basic or mid-level fork and shock setup 735mm CNC USD forks and 290mm nitrogen piggyback shock
    Chassis Lighter beginner-focused chassis designs SDG2 heavy-duty cradle frame with 430mm TIG welded swingarm
    Best For Beginners or progressing riders Experienced riders wanting race-ready performance

    The Stomp Z3R-140 is the better choice if the rider is ready for race-level 140cc performance, stronger suspension and a chassis built for harder riding.

    Why Choose the Stomp Z3R-140?

    Race-Tuned 140cc Engine

    The SR140C engine with Z40 race cam gives stronger performance than a standard 140cc setup.

    Approx. 14hp Power

    Around 14hp at the rear wheel gives the Z3R-140 serious punch for confident riders.

    Full Manual Gearbox

    Manual clutch control gives advanced riders full control over power delivery and gear selection.

    Race Chassis

    The SDG2 heavy-duty cradle frame is built for stiffness, durability and controlled riding under harder use.

    Upgraded Suspension

    735mm CNC USD forks and a 290mm nitrogen piggyback shock improve stability and bump control at speed.

    Track-Ready Feel

    Hydraulic brakes, vented rotors, MX tyres and race-style components make this a serious pit bike package.

    Where Does the Stomp Z3R-140 Fit in the Range?

    Is the Stomp Z3R-140 Right for Your Rider?

    Choose the Z3R-140 If...

    • The rider is experienced with manual pit bikes
    • You want race-level 140cc performance
    • You want upgraded suspension for harder riding
    • The rider will use the bike for track-style riding
    • You want a serious chassis and components without jumping to a larger race bike

    Consider a Smaller Pit Bike If...

    • The rider is still learning clutch control
    • This is their first petrol pit bike
    • You want a gentler first manual bike
    • The rider does not need race-level suspension yet
    • You want something easier to manage for basic progression

    Rider Sizing Guide

    Important: the Stomp Z3R-140 should be chosen by rider height, strength and experience — not age alone.

    With an 82cm seat height, 71kg bike weight and 15 stone maximum rider weight, the Z3R-140 is best suited to confident riders who are physically ready for a race-level manual pit bike.

    Best For Experienced riders stepping into race-level pit biking
    Experience Level Experienced / confident manual rider
    Seat Height 82cm
    Bike Weight 71kg
    Wheel Size 14 inch front / 12 inch rear
    Max Rider Weight 15 stone

    If you are unsure whether this is the right step, compare options using our Best Pit Bike for Beginners UK guide.

    Stomp Z3-140 vs Z3R-140: Which Should You Choose?

    Model Best For Why Choose It?
    Stomp Z3-140 Confident riders wanting strong 140cc performance Serious 140cc power and upgraded components in the standard Z3 package
    Stomp Z3R-140 Riders wanting more race-level track performance Race-tuned feel, stronger chassis focus and serious track-ready setup

    Choose the Z3-140 if you want a serious 140cc performance pit bike for confident off-road riding.

    Choose the Z3R-140 if the rider wants a more race-focused package for harder riding and track use.

    Engine, Gearbox & Riding Feel

    The SR140C engine with Z40 race cam gives the Stomp Z3R-140 a sharp, powerful and race-focused feel compared with standard pit bikes.

    The full manual gearbox gives the rider full control over power delivery, while the SDG2 chassis and upgraded suspension help the bike stay composed when ridden harder.

    The Z3R-140 is best viewed as a genuine race-level pit bike for riders who are ready to push beyond casual off-road riding.

    What’s in the Box?

    • Stomp Z3R-140 race pit bike
    • Final assembly components

    The bike is supplied boxed or partly assembled. Final assembly, mechanical checks and safety inspection are required before use.

    Assembly should be completed by a mechanically capable adult. Always check bolts, brakes, chain tension, controls, oil and fuel before riding.

    Specifications

    Below you'll find the key technical specifications for the Stomp Z3R-140, including engine details, chassis setup, suspension, braking and rider sizing.

    Engine SR140C Z40 Race Cam
    Power Approx. 14hp at Rear Wheel
    Carb 26mm with Double Foam Filter
    Frame SDG2 Heavy-Duty Cradle
    Swingarm 430mm TIG Welded
    Forks 735mm CNC USD
    Rear Shock 290mm Nitrogen Piggyback
    Wheels 14 inch Front / 12 inch Rear SDG Steel
    Tyres Innova MX Pattern
    Brakes Hydraulic Disc with Vented Rotors
    Exhaust 32mm Race Pipe with Alloy Muffler
    Chain 420 with Guide
    Sprocket 420 41T
    Seat Height 82cm
    Weight 71kg
    Max Rider Weight 15 Stone

    Warehouse Stock & Fast UK Delivery

    Online-Only Specialist Pit Bike Retailer

    Garland Powersports is an online-only specialist retailer focused on performance electric bikes, pit bikes and youth off-road machines.

    Stomp pit bikes are held securely in warehousing and dispatched across the UK.

    Delivery options: at checkout, you can choose boxed delivery for the fastest and best-value option, or select a built and ready-to-ride service if you would prefer the bike assembled, safety checked and prepared before delivery.

    Boxed delivery is the best-value option and requires final assembly before riding. Built and ready-to-ride options are available for customers who want the bike prepared before it arrives.

    Fast UK delivery available across the full Stomp pit bike range.

    Frequently Asked Questions

    Is the Stomp Z3R-140 suitable for beginners?

    No, the Z3R-140 is best suited to confident riders with manual pit bike experience. It is designed for race-level pit biking and harder riding.

    Is the Stomp Z3R-140 manual?

    Yes. The Stomp Z3R-140 uses a full manual gearbox with clutch control.

    How much power does the Stomp Z3R-140 have?

    The Z3R-140 produces approximately 14hp at the rear wheel.

    What engine does the Z3R-140 use?

    It uses the SR140C engine with a Z40 race cam.

    What is the seat height?

    The Stomp Z3R-140 has an 82cm seat height.

    How heavy is the Z3R-140?

    The bike weighs approximately 71kg.

    What wheels does it have?

    It uses a 14 inch front and 12 inch rear SDG steel wheel setup.

    Should I choose the Z3-140 or Z3R-140?

    Choose the Z3-140 if you want a serious 140cc performance pit bike. Choose the Z3R-140 if the rider wants a more race-focused package for harder riding and track use.

    Can the Z3R-140 be used on the road?

    No. The Stomp Z3R-140 is not road legal. It is designed for private land and off-road use only.

    Does it need assembly?

    Yes. The bike is supplied boxed or partly assembled and requires final assembly, setup and safety checks before riding.

    Our Verdict

    Choose the Stomp Z3R-140 if the rider is experienced and wants a proper race-level 140cc pit bike.

    Choose the Z3-140 if you want serious 140cc performance but do not need the more race-focused Z3R package.

    Choose a smaller pit bike if the rider is still learning clutch control or needs an easier first manual model.

    For riders ready to step into race-level pit biking, the Z3R-140 is a serious performance choice.

    Ready to Choose the Stomp Z3R-140?

    The Stomp Z3R-140 is a race-level 140cc manual pit bike for riders who want serious performance, upgraded suspension and a chassis built for harder riding.

    Order online today from Garland Powersports with fast UK delivery.

    Shop All Pit Bikes View Stomp Pit Bikes

  • Delivery & Returns

    Delivery options and estimated timescales are shown at checkout based on your location and the delivery methods available to you. All orders are carefully packaged to ensure your bike arrives in perfect condition.

    Stomp pit bikes are covered by a parts-only warranty. This means that in the event of a valid warranty claim, a replacement part will be supplied — labour, fitting costs and any associated expenses are not covered.

    The warranty covers manufacturing defects and component failure under normal use. It does not cover:

    • Fair wear and tear
    • Damage caused by incorrect assembly or setup
    • Damage resulting from misuse, abuse, racing, or modification
    • Consumable items including tyres, brake pads, chains, sprockets, filters and fluids
    • Damage caused by lack of maintenance or incorrect maintenance
    • Cosmetic damage including plastics, graphics and bodywork
    • Damage caused by an accident or impact

    Warranty claims must be accompanied by proof of purchase and, where required, photographic evidence of the fault. We reserve the right to request that parts are returned for inspection before a replacement is issued.

    Returns

    If you wish to return an item, please contact us before sending anything back — we are unable to accept returns without prior authorisation.

    Unused / Unwanted Items
    Unused items may be returned within 30 days of delivery in their original, unassembled condition and original packaging. Return postage costs are the responsibility of the buyer. A refund or exchange will be issued once the item has been received and inspected.

    Faulty or Damaged Items
    If your item arrives damaged or develops a fault, please contact us as soon as possible with your order details and photos of the issue. We will assess the claim and respond with the appropriate resolution — which under the parts-only warranty will typically be a replacement part dispatched to you.

    Please Note
    Once a pit bike has been assembled, fuelled, or ridden it cannot be returned as an unwanted item. If you are unsure whether a bike is right for you before purchasing, please get in touch and we'll help you make the right choice.

Stomp Z3R-140 Race Pit Bike
£1,399.00