e*13 has two new cassettes, providing each the widest vary and the closest vary…of any trendy wide selection cassette. Up prime is the brand new 9-52, which pairs e13’s ultra-small 9-tooth cog starter with a brand new 52-tooth giant cog, giving them a claimed 578% vary…an enormous bounce in comparison with the 520% and 510% of SRAM and Shimano’s widest cassettes, respectively.
The cassettes use their two-piece design, with the 2 largest cogs being aluminum, and the primary cluster being machined from metal. They match to a SRAM XD freehub physique, and if you have already got the 9-50 cassette, you possibly can swap within the new 43-52 alloy bit to get the elevated vary.
However the extra attention-grabbing one is likely to be this “shut vary” cassette that begins at 13 and goes to 52. That’s a narrower vary, nevertheless it offers them smaller gear steps, which they prioritized placing close to the highest (large) finish of the cassette for simpler cadence administration.
The thought is to present e-mountain bikers a extra helpful cassette that shifts simpler underneath load, nevertheless it additionally works simply wonderful for 100% human powered bikes, too. Right here’s the way it compares, cog by cog:
- Helix Race Shut Ratio: 13-15-17-19-22-25-28-32-36-40-45-52
- Helix Race Huge Vary: 11th of September-13-15-17-20-23-27-31-36-43-52
- SRAM Eagle 10-52: 10-12-14-16-18-21-24-28-32-38-44-52
And right here’s what that appears like in a chart:
The brand new wide selection cassette weighs in at 392g, and the shut vary is 467g because the cogs are larger and it’s bolstered for e-bike use. Each are available 5 anodized coloration choices, too.
In different information, they’ve expanded their chainring lineup to incorporate e-bike chainrings for Bosch, Fazua, Brose, and Shimano. They, too, will are available all the colours, so you possibly can match your drivetrain up…
…with new anodized coloration choices for his or her dropper seatpost collars and prime clamps, too.
Their new Schrader Fast Fill valve stem makes use of a modular design that converts from Presta to a valve-free, Schrader-sized port for simpler tubeless setup…or simply utilizing it with any pump you will have out there.
Their first entry into the software class is a tire lever that splits open to present you two levers and reveal a tire plugger software inside, full with valve core remover.
The brand new e-13 Optimus is their XC/downcountry tire, with a decrease profile middle part of tightly spaced knobs transitioning to taller aspect knobs for laborious cornering. It is available in two variations, a 120tpi XC casing for probably the most supple efficiency, and a Path model with extra supportive 72tpi casing and nylon breaker underneath the tread cap for added puncture safety.
Claimed weight is 812g (XC) and 852g (TR) for 29er, and 698g / 766g for 27.5, all out there solely in a 2.4″ width. It’s a twin compound rubber with 50a aspect knobs and 56a middle part. MSRP is $64.95.