Sea Otter 2015 – e*thirteen Carbon Cranks, Innovative EXP Cassette and Upgraded Chainguides

by Brian Mullin on April 27, 2015



e*thirteen have two new lightweight carbon cranksets, the downhill LG1r Carbon, and the Enduro TRSr Carbon. Both use the same hollow carbon fiber crankarms, their 1 Degree EXA+ Alloy 30mm spindle and Adaptive Preload Adjuster (APS). The only difference between the two models is the LG1r gets a longer 83mm spindle length.


The weights are supposed to be between the Shimano XTR and Race Face SL cranksets though no final confirmation of weight or pricing was given. They’ll use their Guidering direct-mount system for the new chainrings, and the trick looking chainrings, which mimic a Ferrari rim, are forged and machined for increased durability and strength. Instead of having the a crank arm puller system being part of the crank itself, they come with a new standalone extracting tool to save weight.


The 30mm spindles provide a stiff and strong platform base for the cranks. The new 1 degree P3 Connect Polygon interface creates a tough and reliable impact-resistant spindle and crank arm junction, with a supposed 18% strength increase.



e*thirteen has totally resigned their LG1+ and TRS+ chainguides for this year. The downhill oriented LG1+ is lighter, stiffer, and now uses a lower idler roller guide and has a long meaty bash guard, which comes with three included sizes. The bottom roller is removable for those days when riding on the milder terrain. The LG1+ weighs between 136g-167g and retails for $150. The ISCG05 mounting holes are longer for additional adjustability to fit more frames and drivetrain systems. The beefy and thick EXA+ Aluminum backing plate now fits all chainring sizes from 28 to 38 teeth.

The new chainguides utilize an innovative tool-free “Easy Adjust” latch buckle design in which the upper guide swings up and away from the body for easy crank removal. The polycarbonate parts are now resistant to solvents, so dry lubes, and cleaners don’t make them brittle and crack. The lower roller of the LG1+ and the interior of the upper slider on both models have co-molded soft rubber to cut down on noise.


The Enduro based TRS+ has a smaller bash guard and also includes three different sized bash guards and uses the same type of backing plate and upper guide as the LG1+. The TRS+ weighs between 89g-120g and retails for $90. Both chainguides come with three different spacers of varying thicknesses to help with fitting and chainline adjustments.


EXP 9-42T Cassette

One of the coolest things was their prototype extended-range cassette. The EXP cassette will fit onto an SRAM XD hub body and have an extremely wide 9-42T range, so you can run smaller front chainrings for increased ground clearance. The three largest cogs are constructed from a single piece of Aluminum, which is then affixed to the driver body with a lockring. The rest of the cogs are made from steel, and it directly attaches to the aluminum spider with an innovative interface that uses some indents or feet that are then twisted and locked into place. This design means you’ll need two chain whips to remove the cassette.


The new cassette is still in early prototype stage, so it will be interesting to see what the outcome of the system will be. For now they’ll have the 10-speed 9-42T, but they’re looking at 8-speed DH and 11-speed cassettes.

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