MRP 1x Series Chain Device

What are the delivery costs?

We offer Free UK Mainland Delivery on all orders over £20. Products shipped to outlying UK regions are excluded from free shipping.

Standard delivery is normally 2 - 5 working days.

Please view our delivery page for full information on UK and international delivery costs.

Developed with World Cup powerhouse Adam Craig, the 1x (pronounced one-bye) is purpose-built for cross country riding with a 1x9, 1x10, 1x11 drive train. If you are running 1x drive train and don't need a bash guard, this is the ticket. No more homemade contraptions needed! Fits seat tube sizes 28.6, 31.8 & 34.9mm (with supplied rubber shims).

MTB chainline = 49-51mm for middle chainring position on MTB Triple crank.

MRP also gave the MTB version significantly more vertical adjustment, due to the small chainrings that will be used (32t is common) and the large quantity of carbon bikes with flared seat tubes at the BB junction.

Key Features:

  • Weight: 32-40T: MTB 74g.
  • Black or White Upper Guide.
  • Chainline adjustment.
  • Seat Tube Mount - Fits seat tube sizes 28.6, 31.8 & 34.9mm with supplied rubber shims.
  • Includes spacers for fine chainline adjustability
  • Looks and works great with a new MRP chainring! 

Occasionally, without notice, manufacturers change product design and/or specifications.