Shimano GRX Carbon wheels go wider, deeper and drop almost 400g

The all-new carbon GRX wheelset drops ~350g off the alloy set’s claimed weight, shedding all of that weight from the swap to carbon rims.

The new option provides a drastic reduction in rotational mass, so it should provide a huge improvement in acceleration. And, they do that while getting both wider and deeper!

shimano grx carbon wh-rx870-tl wheelset closeup details

The new WH-RX870-TL GRX Carbon wheels will only come in 700c versions, whereas the original alloy models launched with 700c and 650B sizes. All are tubeless ready.

The new carbon rim is 25mm wide internally and 32mm deep, compared to 21.6mm internal and 22mm deep for the alloy rims. So, presumably, a bit better aerodynamics, yet tough enough for (in their words) serpentine singletrack or bushwhacking along old goat paths.

shimano grx carbon wh-rx870-tl wheelset closeup details

While some of their sponsored riders have opted for Dura-Ace wheels in the past, these shallower GRX Carbon wheels provide the stiffness and lighter weight, but in a shallower depth that should be better for the crosswinds at courses like Unbound. And probably a bit more compliant.

shimano grx carbon wh-rx870-tl wheelset closeup details

Shimano GRX Carbon wheelset pricing & specs

External width is 30mm, and they’re compatible with 32mm to 50mm tires. Here’s the full spec list:

  • Designed for 32-50mm tire widths
  • 25mm internal and 30mm external rim widths
  • Rim Height: 32mm
  • Cup-and-cone ball bearing hubs
  • 24 spoke count
  • Weight: front wheel 639g, rear wheel 822g, total weight of 1,461 grams

MSRP for the wheels is $1,399, almost a thousand dollars more than the alloy version, but still a bit of a bargain for a wide, light carbon wheelset…and especially one from Shimano.

bike.shimano.com

Subscribe
Notify of
guest

This site uses Akismet to reduce spam. Learn how your comment data is processed.

5 Comments
Oldest
Newest Most Voted
Inline Feedbacks
View all comments
Dinger
Dinger
6 months ago

These sounds like an excellent do it all wheelset at a very competitive price.

NJG
NJG
6 months ago

with hubs that will last at least 3 weeks.

Gordo
Gordo
6 months ago
Reply to  NJG

You misspelled decades

dr_lha
dr_lha
6 months ago

Gotta hand it to Shimano for sticking with cup-and-cone even on a $1400 wheelset!

Jacobn
Jacobn
6 months ago

doesn’t mention if they are hookless or not