eThirteen debuts Close Range Cassette, XC tire, neat tools & more

e-thirteen ultra wide range mtb cassette

e*Thirteen has two new cassettes, offering both the widest range and the closest range…of any modern wide range cassette. Up top is the new 9-52, which pairs e13’s ultra-small 9-tooth cog starter with a new 52-tooth large cog, giving them a claimed 578% range…a big jump compared to the 520% ​​and 510% of SRAM and Shimano’s widest cassettes, respectively.

The cassettes use their two-piece design, with the two largest cogs being aluminum, and the main cluster being machined from steel. They fit to a SRAM XD freehub body, and if you already have the 9-50 cassette, you can swap in the new 43-52 alloy bit to get the increased range.

e-thirteen helix race close range cassette

But the more interesting one might be this “close range” cassette that starts at 13 and goes to 52. That’s a narrower range, but it gives them smaller gear steps, which they prioritized putting near the top (big) end of the cassette for easier cadence management.

e-thirteen helix race close range cassette

The idea is to give e-mountain bikers a more useful cassette that shifts easier under load, but it also works just fine for 100% human powered bikes, too. Here’s how it compares, cog by cog:

  • Helix Race Close Ratio: 13-15-17-19-22-25-28-32-36-40-45-52
  • Helix Race Wide Range: 9-11-13-15-17-20-23-27-31-36-43-52
  • SRAM Eagle 10-52: 10-12-14-16-18-21-24-28-32-38-44-52

And here’s what that looks like in a chart:

The new wide range cassette weighs in at 392g, and the close range is 467g as the cogs are bigger and it’s reinforced for e-bike use. Both come in five anodized color options, too.

e-thirteen e-MTB chainrings

In other news, they’ve expanded their chainring lineup to include e-bike chainrings for Bosch, Fazua, Brose, and Shimano. They, too, will come in all the colors, so you can match your drivetrain up…

e-thirteen dropper seatpost with anodized color options for collars and top clamps.

…with new anodized color options for their dropper seatpost collars and top clamps, too.

e-thirteen modular presta and schrader tubeless valve stem

Their new Schrader Quick Fill valve stem uses a modular design that converts from Presta to a valve-free, Schrader-sized port for easier tubeless setup…or just using it with any pump you have available.

e-thirteen tire levers with integrated tire plugger tool

Their first entry into the tool category is a tire lever that splits open to give you two levers and reveal a tire plugger tool inside, complete with valve core remover.

e-thirteen xc mountain bike tire

The new e-Thirteen Optimus is their XC/downcountry tire, with a lower profile center section of tightly spaced knobs transitioning to taller side knobs for hard cornering. It comes in two versions, a 120tpi XC casing for the most supple performance, and a Trail version with more supportive 72tpi casing and nylon breaker under the tread cap for added puncture protection.

Claimed weight is 812g (XC) and 852g (TR) for 29er, and 698g / 766g for 27.5, all available only in a 2.4″ width. It’s a dual rubber compound with 50a side knobs and 56a center section. MSRP is $64.95.

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