An all-terrain road bike with the ability to run large tyre sizes while maintaining its road credentials
— What is it?

Paved or unpaved, this bike will tackle it all.

Developed using the Durmitor as our blueprint, the Mamtor is designed for those who just can’t resist finding out where that gravel track leads. Testament to the unmistakable 'realness' of steel this frame is as much at home flying down dirt roads as it is rolling on pristine asphalt. No other material brings alive gravel tracks and forest paths better and with clearance for 700x40c tyres only your desire to explore can limit where you will go.

We wanted a versatile dirt-road bike that is as home on tarmac as it is on gravel.
— Why we made it?

Road geometry, dirt clearance.

With the Mamtor we wanted to see how far we could take our endurance geometry off-road because the fast, long-distance nature of the design lent itself to gravel tracks and multi-surface adventures. With this in mind we worked on fitting larger volume tyres into the frame for greater off-road capability and comfort while adjusting the geometry by introducing a more relaxed fork trail with a longer wheelbase for confidence and stability.

If you can only have one bike to do it all this is it.
— Who is it for?

Use this bike for…

Road ▲▲▲▲△

Hardpack ▲▲▲▲▲

Gravel ▲▲▲▲▲


G-Road Geometry

Developed from our extensive fitting experience based on repeated observation of rider positions our G-Road geometry takes what we learnt from our Endurance Race geometry and applied it to multi-surface road riding. The result is a more stable ride with enhanced control while maintaining those all important endurance credentials. Stack height is slightly raised but still suitably low for a balanced position.


Build Details


Standard with every frame

  • Columbus Futura Gravel fork

  • Columbus Compass 44 headset

  • Custom Quirk stainless headbadge

  • Stainless bottle mounts for ultimate protection

  • Machined replaceable hanger

  • 2019 seasonal colour paint scheme

  • Front and rear thru-axle skewers

Choose between

  • SRAM Red/Force AXS | Shimano Ultegra Di2 or Mechanical | SRAM Force1 | SRAM Rival1 | Shimano 105 Disc

  • ENVE G23 | Zipp 303 | Hunt 30 Carbon Gravel | Hunt 4 Season Gravel

  • Fabric ALM | Scoop | Line saddle with carbon or steel rail

  • ENVE Road/Gravel | Zipp Service Course SL | Deda Road/Gravel Zero 100 | Fizik Cyrano R5


One thing you can be certain of when getting a Quirk is you’ll be getting one of the best finishes in the business. Deciding what to have is the hard part so we’ve made it easier by drawing up some iconic designs so you can spend more time getting excited over your new bike.

Below you can see our new Kinder design that comes included in the price of your frame. To see more designs and finish options head over to the PAINT-HAUS.


Ready to Order

Frameset £2450

Full builds starting at £3820





Endurance Road



Adventure Gravel