Pitbike Parts UK
UK-Made Pitbike Parts, CNC Race Components & Supermoto Upgrades
PlazCutz Racing designs and manufactures high-quality pitbike parts for riders who want stronger, smarter and more reliable race bike upgrades.
From captive wheel spacers and chain adjuster blocks to brake conversion parts & race paddock equipment, our products are developed from real race experience, workshop testing and hands-on product development.
Whether you're racing minibikes, building a pit bike supermoto conversion or improving your bike for track days, our parts are designed to solve real problems — not just look good on a product shelf.
Designed, manufactured and race tested in the UK by PlazCutz Racing.
Browse Pitbike Parts
Brake & Wheel Conversion Parts
Replacement Parts
Pitbike Parts Built Around Real Racing Problems
Pit bikes are simple, lightweight and great fun to race, but anyone who has spent time in the paddock knows the common problems.
Loose wheel spacers fall out during wheel changes. Standard chain adjusters can be awkward to set accurately. Brake conversions often need custom spacing. Wheels need correct alignment. Paddock equipment needs to be compact, practical and easy to use between sessions.
At PlazCutz Racing, we develop parts by solving those exact problems on our own race bikes and customer builds. Every product starts with a real issue, then gets designed, machined, tested and refined until it works properly in the real world.
Pitbike Wheel Parts & Captive Spacers
Pitbike Captive wheel Spacers
Wheel changes should be quick, simple and stress-free.
Our pitbike captive wheel spacers are designed to improve wheel fitment, spacer location, wheel alignment and race-day usability. Captive wheel spacer systems help prevent loose spacers from falling out, rolling away or getting mixed up during wet and dry tyre changes.
Perfect for:
Pitbike racing
Minibike racing
Supermoto conversions
Wet and dry wheel sets
Fast paddock wheel changes
Pitbike Captive Wheel Spacer for 15mm Axles.
Replacement upgraded wheel bearing and press in Captive Wheel Spacer. Perfect to press in and stay part of your wheel. Saves the spacers dropping out during wheel changes. Supplied Bearing is oversized for the spacer to lightly press inside it and allow for the standard 15mm axle to still be used.
Kit Contains ONE wheel bearing and Spacer, mix and match to get the correct fit for your wheels.
Spacer OD is 25mm so it has a larger surface area to help from marring the swingarm like the small steel ones do.
Step lip OD is 22mm and will allow to fit the seals if you use them.
Length is measured from the step lip base and you need to add +1mm to your desired length as these are 10mm bearings not the 11mm as standard fitment.
Spacers are CNC Made from 6082 T6 Aluminium.
Bearing brand: FAG, SKF, NSK, KOYO or equivalent quality.
Range of spacer sizes to cover all fitments and wheel setups, including Mobster, Vortex, M2R, Symoto, MAG, SDG, VMC.
Spacer and bearing upgrade fit any wheel setup that uses the 6202 bearing.
Note: you need to add +1mm to your desired length
To install:
Simply remove your existing 6202 bearing and fit the supplied one in the kit, ensuring the spacer tube is aligned and the bearing is fully seated home.
Lightly press the correct Captive Spacer into each side all the way. Spacers are precision machined and only require lightly pressing to get them seated correctly.
Replacement wheel spacer available here
Supermoto Spacers COMING SOON!
Chain Adjusters, Axle Blocks & Crash Protection
Accurate chain adjustment and rear wheel alignment are important for handling, tyre wear and confidence on track.
Our CNC machined axle blocks and chain adjuster parts are designed to make setup more accurate while adding practical crash protection where possible. Integrated sliders help protect key components in the event of a slide, while improved adjuster designs make rear wheel changes and setup easier.
Ideal for riders who want a cleaner, stronger and more race-focused setup.
Pitbike Chain Adjuster Blocks with Replaceable 32mm paddock stand lifting bobbin Crash Sliders (Pair)
PlazCutz Racing pitbike chain adjuster blocks with rear adjustment are designed to provide accurate chain adjustment while adding an extra layer of protection in the event of a crash.
The adjuster blocks are CNC machined from aluminium and fit directly into the swingarm, located and clamped in place by the 15mm rear axle when the wheel is tightened. The bike’s chain M6 adjuster bolts in the rear of the blocks react against the swingarm, allowing precise and repeatable drive chain adjustment.
Each block features a replaceable paddock stand lifting crash slider bobbin, CNC turned from durable acetal and secured using an M8 fixing bolt.
With our testing we found the M6 bolts snapped too easily even in a low speed spill, so we upgraded these to be M8 for more strength and durability.
In the event of a crash or slide, the acetal bobbins help absorb impact and reduce damage to the swingarm and rear axle area. If damaged, the bobbins can be easily replaced without changing the aluminium blocks.
Supplied as a pair, these chain adjuster blocks are ideal for pitbike racing and track use, combining accurate adjustment, strength, and practical crash protection.
Lifter Slider bobbins are 29mm OD - 32mm long with M8 bolt fixing hole.
Different sizes are available in our store.
Kit Contains:
2x Chain Adjuster Blocks
2x M8 Axle Slider Lifting Bobbins 32mm Long
2x M8 Bobbin Fixing Bolts
M6 Adjuster Bolts Not Included as they will be bike dependent
Replacement 32mm Paddock Stand Slider Bobbins can be found here:
Replacement Lifter Slider Bobbins
Built for racing. Designed for reliability.
Pitbike Paddock Wheel Tree
Race weekends are easier when your tools and equipment are organised.
Our paddock equipment is designed for riders who need practical, compact and reliable support gear at the circuit. From wheel trees for wet and dry wheel sets to practical paddock equipment, these products are built to make maintenance and race preparation easier.
Keep spare wheels organised, protected and ready for fast tyre changes between sessions.
Pitbike Paddock 12” Wheel Stand Storage Tree
The PlazCutz Racing Pitbike Paddock Wheel Tree is designed to keep your spare wheels safe, organised, and off the ground while in the paddock.
Built specifically for 12” pitbike wheels, this storage tree holds two rear wheels on the lower bar and two front wheels on the upper bar, making it ideal for race weekends with multiple tyre setups. Keeping wheels off the floor not only protects tyres and discs but also allows tyre warmers to be fitted while stored.
Manufactured with motorsport use in mind, the wheel tree is durable, stable, and powder coated for a clean factory-style finish. Each wheel arm is fitted with pin clips to prevent wheels from slipping off during use.
For easy transport and storage, the centre pole detaches, allowing the tree to pack down quickly — perfect when van and trailer space is limited.
A practical paddock solution built by racers, for racers.
Built for Pitbike Racing
Every PlazCutz Racing pitbike part is designed to solve real issues found in the paddock — from faster wheel changes to improved alignment, stronger axle protection and more reliable race-day preparation. Designed, manufactured and race tested in the UK.