e*thirteen's TRS Race 11-speed cassette, which we first spotted at this year's Eurobike trade show, is now in full production and available for purchase. The follow up act to their 9-44 tooth TRS+ cassette, the TRSr boasts a massive 511% gear range thanks to its 9-46 tooth spread. For comparison, SRAM's 12-speed Eagle drivetrain has a 500% range, and Shimano's 11-speed 11-46 cassette creates a 418% range.
There's no shortage of drivetrain expansion accessories these days, but the TRSr is certainly an intriguing option, especially since it works with existing 11-speed drivetrain components - there's no derailleur modification necessary to get it up and running.
TRS Race Cassette Details:
• 11 speed, 9-46 tooth spread
• 511% gear range
• Tooth count: 9-10-12-14-17-20-24-28-33-39-46
• XD driver body required
• Weight: 307 grams (actual)
• MSRP: $349 USD
• Contact: • www.bythehive.com
The TRSr cassette is comprised of eight steel cogs and three aluminum ones.
The aluminum cogs are held onto an XD driver by a lock ring, and the cluster of steel cogs is rotated and locked into place with a chain whip.
Even with its extra-wide range, the cassette still weighs in at only 307 grams, which is lighter than both Shimano and SRAM's highest end offerings. The cassette uses a two piece design - the eight smaller cogs are constructed from steel, and the largest three are aluminum. Each piece is available separately, allowing riders to avoid shelling out the cassette's entire $349 asking price when they need to replace either their climbing or descending gears.
We're only just started to put in the miles on the TRSr - stay tuned for our final verdict once we use and abuse it over the course of a wet and muddy winter.