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Daily Coverage , Forks , Interbike 2011 , Parts

MRP and White Brothers 2012

The long-awaited MRP 2x chain guide for 2×10 drivetrain system is now available, so no more dropped chains, nor chain, chainstay and bottom bracket damage. The 2x has been in development for almost two years at MRP, and they used their chain guide expertise to create the new beast, which uses their removable skid and new dual pulley tensioning system. The integrated skid shields the chainrings from damage that occur on impacts with any sort of objects, whether its logs, rocks, or body parts! The very trick dual pulley ensures correct chain tension and proper positioning, and the chain switches pulleys depending on its chainring position. The guides upper fin keeps the chain from flopping down towards the bottom bracket shell, to help alleviate any damage.

They did extensive, internal and external (of the rock kind) testing, and also partnered with SRAM to make the 2x worked optimally with 2×10 drivetrain systems. Using their knowledge base from their existing G2sl, LRP and XCG guides, they designed a lightweight, robust and functional 2x guide who didn’t require an outer capture ring on the cranks, and instead utilizes the pulley and front derailer to keep the chain in retention. It will also work with a 2×9 rig, but utilizing a spacer to adjust for varying chainlines.

They are working with Ibis for a version that will be compatible with their DW Link Mojo, so I am waiting with bated breath to test one out on my Mojo HD stead.

MRP 2x Specs:

  • MSRP: $150
  • MRP’s patented skid (US Patent 7,066,856), removable for those who prioritize weight savings over protection (43g savings)
  • Patent-pending dual pulley design provides precise chain engagement while reducing noise and drag
  • Raised top fin profile prevents the chain from dropping to the BB shell
  • ISCG, ISCG-05, and BB mounting options
  • Compatible with 9 and 10 speed drivetrains
  • Available in black or white
  • Weight: 36-38T w/ skid – 130g (ISCG-05 model) and 39-42T w/ skid – 144g (ISCG-05 model)

Other MRP Releases
Some other interesting MRP tidbits were the Micro G2 chain guide who was optimized for uber small chainrings in the range of 28 to 32 teeth, and has a retail of $150. A limited edition and very trick S4 Carbon was on display, which has carbon outer ring, backplate and chain guide.  Using carbon saves weight, and allows a bit of give on an impact compared to metal. And last but not least was the G2sl Carbon, which forgoes the metal for a carbon backing, for some minor weight savings, and retail pricing of $175 or $220.

White Brothers
The new LOOP series fork from White Brothers was finally released this year, after seeing a teaser of it at the previous year’s show. The Loop has 32mm stanchions, cast magnesium lowers, forged alloy crown, optimized butted legs, the Aura damper which uses their magnetic valve technology and the QtapeR15 15mm axle. It has adjustments for rebound, compression and air pressure, and has five notches for compression damping, and three for the threshold, allowing a great deal of tunings for differing terrain, bike characteristics and rider style. It comes in 26″/650b and 29er versions with travel from 80/100/120mm and 130/140/150mm for the 26″, and 80/100/120mm and 120/130/140mm for the 29er, which are all internally adjustable to one of the three settings. They come in straight and tapered steerer version, and white or black colors, and retail for $795.

The QtapeR15 is a pretty trick unit, and is easy to use, and extremely stiff, due to how it’s loaded into the legs. The tapers wedge themselves into the fork’s dropouts, and lock up each end of the leg up snugly, for additional stability and stiffness.

LOOP Specs:

  • 650b, 26″, and 29″
  • 650b/26″ Travel from 80-120mm and 130-150mm (internally adjustable)
  • 29″ Travel from 80-120mm and 120-140mm (internally adjustable)
  • Aura Damper with magnetic valve technology
  • Adjustable rebound, compression, and threshold
  • QTapeR15 15mm tool-free through-axle
  • 1″, 1 1/8″, and tapered (1.5-1 1/8″) steerer options
  • White or Black with color-matched crown
  • 4.1 lbs. for 26er and 4.3 lbs. for 29er

Snowpack Fork
They also had a unique new fork for fat tire behemoth’s like the Surly called the Snowpack. It has carbon legs, a 135mm front spacing, and two axle-to-crown options of 450mm or 468mm, with weights around 930 grams, and retail of $445. I am sure it will see some usage on snow, sand and fat tired bike.

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