e*thirteen
e*thirteen is an American component manufacturer founded in 2001 that specialises in off-road drivetrain parts and wheels. It first became known for chain guides and bashguards for downhill and freeride use, and later for wide-range cassettes in the Helix and TRS lines, which include a 9-50T spread for 12-speed drivetrains. Its catalogue also covers cranksets, tyres, wheels and the Vario Infinite dropper post, whose travel is adjusted internally without spacers.