Junior Rear Fender
A mini version of our classic Rear Fender, built to keep young riders dry, clean, and comfortable without adding weight or fuss. It mounts directly to the seatpost or seat tube, giving reliable protection from mud and spray thrown up by the back wheel.
Light, strong, and perfectly shaped for smaller frames, it’s available in Small (12 - 16" bikes) and Large (18 - 24" bikes). Finished in our fun Doodle Black graphic for launch, it brings a bit of personality to their ride while keeping school clothes, kit, and backpacks splatter-free.
Technical Shizzle
- Fits all standard seatposts and seat tubes, space permitted
- Works great on kids’ bikes and other small-wheel rides
- Fixed angle for solid, no-faff protection
- Made from our signature recycled plastic
- Ultra-light: from 35g
- Flexible enough to roll up and stash
- Supplied with a reusable non-slip fastener
- Small: 35g, 320mm long, 65mm wide (effective)
- Large: 50g, 470mm long, 75mm wide (effective)
Eco Credentials
- Made in the UK from 100% recycled plastic
- Ships flat to cut packaging and waste
- Built to last – tough, light, reusable
- Comes with a reusable non-slip fastener
- Fully recyclable
what makes it great
- Keeps young riders dry, clean, and comfortable
- Light, tough, and shaped perfectly for smaller bikes
- Mounts to seatpost or seat tube - space permitted
- Rolls up small for stashing in a school bag or pack
- Great coverage for 12–16" and 18–24" bikes
- Quick-fit with a reusable non-slip fastener
- Made in the UK, from recycled plastic
- Fully recyclable
Mount options
Fits any standard seatpost or seat tube, sitting neatly under the saddle or lower down the frame, where space allows. Quick to mount, secure once fitted.
Eco-Savvy
Made in the UK from 100% recycled plastic. Each Junior Rear Fender comes with a reusable, non-slip fastener - no waste, no fuss, just proper protection.
The Perfect Partner
Want full front-and-rear protection?
Pair the Junior Rear Fender with the Junior Face Fender for the ultimate muck-busting combo.
Light, tough and made for young riders who love exploring.
FAQs
What bikes does it fit?
The Junior Rear Fender is designed for kids’ bikes and any small-wheel bikes running 12–16" (Small) or 18–24" (Large) wheels. It fits any standard seatpost or seat tube, as long as there’s space above the rear tyre.
What does it do?
It stops mud, spray, and trail crud getting flicked up your back by the rear wheel, keeping riders drier, cleaner, and far more comfortable.
How do I fit it to my bike?
Super simple. Follow the instructions on the back of the Fender. Wrap the reusable non-slip fastener around your seatpost (or seat tube if you have clearance), tighten it down, and you’re ready to roll.
Can I leave it on all year?
Yes. It’s light, quiet, and tough enough to stay put through rain, muck, school runs, and weekend adventures.
Will it get in the way while riding?
Nope. Its slim, flexible profile sits neatly behind the wheel without interfering with pedalling, frame movement, or tyre clearance.
What’s it made from?
UK-made using Mucky Nutz’ signature 100% recycled, high-performance plastic - tough, flexible, UV-stable, and built for all-weather riding.
Is it easy to take on and off?
Yes - the reusable non-slip fastener means you can whip it off in seconds for cleaning, swapping between bikes, or packing into a school bag.
Do you make a matching Junior Face Fender?
We do! For full front-and-rear protection, pair it with the Junior Face Fender - designed specifically for small-wheel bikes.
