What is Frameguard?

Protect Your Bike, Absorb The Strike
Frameguard, a tough, metal-reinforced polymer moulding, stops damage to the motor/battery casing and the lower end of the downtube. 
The impact of rock strikes around the crank area of the frame are absorbed and dispersed, instead of being able to crack, dent or shatter.
Designed to fit many market leading E-bike brands such as Specialized, Cube, Mondraker, Santa Cruz etc.


How Does it Fit the Bike?

A metal reinforced plate not only adds extra impact protection but also allows you to bend the Frameguard to fit the shape of the bike frame to give you a seamless fit. There are 4 self adhesive fastening tabs which stick to the frame and are attached to the Frameguard via Velcro straps. The Velcro straps hook through the tabs and the Frameguard to hold it to the frame. To remove the Frameguard simply undo the straps.


  • Impact protection for your motor casing
  • Reduce damage from heavy rock strikes
  • Downtube protection from trail debris
  • Designed to fit most market leading E-bike brands
  • Removable & washable
  • Tailgate and bike rack protection
  • Easy to fit


Technical Specification

Arched Design 

The overall curvature of Frameguard gives extra volume, to ensure a seamless fit between the guard and the frame – regardless of bike brand.


Impact Absorbing Material

The high shock absorbing polymer is specially formulated to take on heavy rock strikes, and avoid shattering the factory fitted motor casing. Its flexible properties allow it to absorb the impact, without damaging the frame behind it.

Metal Plate 

An aluminium plate moulded inside the Frameguard reinforces the tough, shock absorbing polymer material, and also bends the Frameguard to suit each bike frame.

Feathered Out Design 

Tapers towards your bike frame to give it a seamless finish, and appear as part of the bike.

Drain Holes

To avoid the build-up of mud and debris under the Frameguard, these drain holes will allow water to flow through when washing the bike down post-ride.

Inner Channel

Allows water, mud, and debris to flow through.

Velcro Fastenings

Frameguard needs to be removable to allow the cleaning and maintenance of your bike. These strong Velcro straps offer an easy solution for removing the guard quickly, without removing the tabs.

Metal & Adhesive Tabs 

Aluminium tabs are the ideal material to curve to your frame and enable maximum anchorage when the high grade self-adhesive is fixed in place.
Frameguard will not move under wet, muddy or harsh riding/cleaning conditions – however, the tabs will peel away under hairdryer heat, leaving no damage to paint work.

Also Available

Downtube protection for carbon and aluminium frames. Same design, slightly different geometry. Developed to prevent strikes and chips to the frame and paint work.

Who Are We?

Set at the mouth of the Duddon Valley in the Lake District is Urofoam, a 32 year old polymer moulding company offering R&D assistance and bulk manufacturing facilities to industries such as oil & gas, mining, automotive and sports.
Two years ago a group of local MTB bike riders and mechanics, frustrated with the poor quality of tubeless inserts in the market, approached us with a bold idea. Their idea was to create a robust tyre insert which protects the wheel and rim from damage without altering the ride performance. 
Immediately intrigued by the challenge our design team set about developing a product which allows sealant to flow freely, run lower PSI’s without increasing punctures and protecting the rims from impact strikes.
After a few failed attempts, some regrettable language and lots of testing – the tyre insert Rockstop was born.
At the end of summer 2020 the same frustrated riders and mechanics asked us to look at impact protection for E-Bikes. 
E-bike sales have risen exponentially in recent months and with it, also, the need to repair the factory fitted casing which cracks easily with rock strikes.
As we’re specialists in impact protection we knew our material was the right stuff for the job so the rest of the brief needed to focus on a product that is not only removable but also universal – with a huge range of bike brands on the market it was no small task. 
After a few failed attempts, some regrettable language and lots of testing – Frameguard was born.

Contact Rockstop

For more details and to contact click to see their website here
Instagram – @rockstop_mtb
Facebook – @rockstopmtb

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