The fully redesigned Bontrager Kovee RSL XC race wheels have been raced below their World Cup riders for greater than a yr, include no rider weight restrict, deal with tremendous extensive tires, and weigh as little as 1,199 grams.
This makes them among the (if not thee) lightest mountain bike wheels in the marketplace, and the Kovee Professional 30 wheelset isn’t far behind at 1,385g whereas being much more reasonably priced. Yep, their 2nd tier racing wheelset continues to be lighter than most model’s high providing. Right here’s how they did it…
A 315g XC mountain bike rim
The guts of the brand new Kovee RSL and Professional wheels is an all-new rim. Extraordinarily shallow at simply 22mm, designed to be compliant, but stiff, and decrease materials and weight with out sacrificing power and sturdiness.
The RSL rims are available at a claimed 315-320g every, and the Professional 30 are 375-380g. Each use the identical profile, it’s the supplies that differ.
The RSL rims use larger finish carbon fiber and resins, and the plies are extra exactly reduce and positioned, decreasing total materials utilization. Mixed, this leads to vital weight financial savings, however a for much longer, costlier manufacturing course of.
The Professional 30 rims use extra commonplace carbon supplies and processes, so that they’re extra environment friendly to make.
The edges use a hooked design, however with a wider, broader sidewall and bead form. Bontrager tells us this offers them the anti-pinch flat advantages of hookless, however with the added safety of a bead hook.
The thicker sidewalls additionally make them extra affect resistant, and an offset spoke mattress improves wheel dish. The result’s a rim they are saying is skinny sufficient to be compliant and cozy, however sturdy sufficient to race by means of the hardest XC programs.
The Bontrager Kovee RSL wheels include DT240 Heart Lock hubs and the Ratchet EXP XD driver, with TLR rim tape and valve stems pre-installed. Retail is $2,499.
The Bontrager Kovee Professional 30 wheels get Speedy Drive 180 XC hubs with a splined drive ring and 6-bolt brake rotor mounts. MSRP is $1,499, full wheelset weight is 1,385g (claimed). Select from XD, MicroSpline and HG freehub our bodies for these and the Elite and Comp wheels beneath.
Outline “Cross Nation”
A sub-1200g race wheelset is often supposed for light-weight riders on race bikes. However the brand new Kovee RSL and Professional 30 don’t have any rider weight restrict, are designed for two.0″ to 2.6″ tires, and, they instructed us, are tremendous for 120-130 bikes.
Additionally they include a Lifetime Assure in opposition to producer’s defects, and if you happen to, as the unique proprietor, harm them within the first two years of possession, they’ll restore or exchange them without cost. All that mentioned, these are supposed to be ridden as “cross nation” wheels, not abused like path wheels.
New Kovee Elite 30 and Comp 25 wheels, too
The Kovee Elite 30 wheels use the identical carbon rim profile, however with a fair easier layup and supplies. Claimed rim weight is 420-425g, and claimed wheelset weight is 1,585g. Additionally they get Speedy Drive 108 hubs, however with conventional flanges and J-bend spokes. MSRP is $999.98.
The Comp 25 wheels use alloy rims and are available at simply $399.98. The edges are a however shallower at 20mm deep, and bit narrower at 25mm inner (30mm exterior). They get the identical Speedy Drive 108 J-bend hubs because the Elite wheels, and have a claimed weight of 1,675g.