Fits difficult clearance linkage suspension bikes by moving the whole guide system a little way out. The S4 Alloy will be the best fitting chain guide in the history of MRP and the world.
The original System 1 from MRP set a benchmark for chain guide performance and was granted a USA patent that still stands. Over the years, the classic “Dual-Roller” design from MRP was refined for greater adjustability, frame compatibility, lower weight, and lower price, as seen with the System 2 and then the System 3 guides.
The Dual-Roller design is a timeless, perfect mechanism that was deserving of an update.
Details & Features:
MRP started with a clean sheet of white paper and redesigned every single part to be lighter and easier to install and set up.
What makes the S4 Alloy distinct from the G2 SL is two things:
1) the backplate has a few more millimeters of frame clearance on the lower guide area compared to the G2 SL, which is necessary on some hard-to-fit frames.
2) it uses a full bash guard so that impacts are transferred to the cranks and not the frame.
Some riders prefer a full-bashguard system for this consideration, or for reasons of style.
The S4 Alloy will feature new bashguard designs, similar to the Party Crasher Lite, but even lighter.
The same skeleton pattern of weight reduction on the new G2 SL skid plate is seen on the front side of the S4 Bashguard, while the back side of the S4 Bashguard features a honeycomb weight reduction pattern.
Chain devices fit in various places around a mountain bikes transmission and help to eliminate chain suck and chain slap when riding over rough terrain or landing from big drops. There are a number of fitments, some frames have ISCG mounts which are lugs on the drive-side of the bottom bracket shell and allow direct fitment to the frame, other chain devices fit in between the bottom bracket and frame and require a specific bottom bracket with a larger drive-side cup, and finally there is the type that clamp around the seat tube in place of the front mech. Also within this section you can find single speed chain tensioners which fit in place of the rear mech and take up any chain slack.There is also a selection of wheel tugs which stop you pulling your wheel over in horizontal dropouts.
MRP have been producing high quality cycle chain guide systems since 1996. MRP guides are the consistent choice of the world’s best riders in every discipline on the mountain. Just ask the legends of the sport what chain guide they insist on using year after year. The answer is always ""MRP"" for their quality, dependability, and reliability.
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Executive Director: Stefan Barden.