Sea Otter: MRP shows new AMG chainguide, Wave chainring

Lighter weight guide and better mud-shedding chainring aim to improve ride

Components Sea Otter Classic

2015 Sea Otter Classic

Co-molded rubber in the guide is designed for quieter operation.

Co-molded rubber in the guide is designed for quieter operation.

Mountain Racing Products (better known as MRP) is doing everything in its power to assure your chain stays where it’s supposed to be. At last weekend’s Sea Otter Classic, the Grand Junction, Colorado-based company had two new offerings on display, its revised AMG chain guide and its new Wave chainring. Here’s a look at all the pertinent details.

AMG Chain Guide

The second generation of this popular enduro-oriented guide offers lower weight (110 grams for the alloy model) and quieter operation thanks to co-molded rubber inside the upper guide channel. The integrated skid plate has been updated to better interface with smaller chainrings used with 1×10 and 1×11 drivetrains. Weight has also been removed from the backing plate, which is part of the reason why it’s become the choice of riders on the Giant’s pro enduro race team. MSRP is $120 for the alloy model, and $170 for carbon fiber.

  • Quieter operation
  • Stiffer back plate
  • Available 26t-32t and 32t-38t sizes
  • Stiffer back plate
  • Claimed weight 111 grams for alloy model
The new chainring will be offered in direct mount, 104bcd, and 110bcd versions.

The new chainring will be offered in direct mount, 104bcd, and 110bcd versions.

Wave Chainring

Meet MRP’s take on the thick-thin ring. But instead of simply copying what SRAM has been doing for a few years, MRP opted for a patent pending wave pattern it says is more durable and does a better job of shedding mud. The wave pattern, says MRP, shifts from one side to the other, which allows the ring to occupy the width of the chain while riding in the rollers, but also clear mud and not derail. Initially the Wave Ring will be offered in direct mount for SRAM for $80. In June, MRP is planning to add 104bcd and 110bcd for $50. Direct mount will be available in 28t-36t versions, 104bcd goes from 30t-38t, while the 110bcd spacing will cover 38t-42t. There’s also talk of a 26-tooth version, but MRP is still testing materials because of the durability issues associated with smaller chainrings, which typically wear down quicker because of the lower tooth count.

  • Direct mount for SRAM and RaceFace Cinch
  • Available 28t-36t with 24mm and 30mm offsets
  • Claimed weight 82g for 32t
  • For 104bcd, available in 30t-38t
  • For 110bcd, available in 38t-42t

For more information visit www.mrpbike.com.

This article is part of Mtbr’s coverage of the 2015 Sea Otter Classic in Monterey, California. For more from Sea Otter CLICK HERE.


About the author: Jason Sumner

An avid cyclist, Jason Sumner has been writing about two-wheeled pursuits of all kinds since 1999. He’s covered the Olympics, Tour de France, MTB world champs, and dozens of other international cycling events. He also likes to throw himself into the fray, penning first-person accounts of cycling adventures all over the globe. Sumner, who joined the Mtbr staff in 2013, has also done extensive gear testing and is the author of the cycling guide book "75 Classic Rides: Colorado." When not writing or riding, the native Coloradoan can be found enjoying life with his wife Lisa and kids Cora and Tommy in and around their home in the MTB Mecca of Crested Butte.


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