Speed Tuned GrTR21d Tubeless Clincher Wheel Set
$449.99
The Speed Tuned GRTR21d is a strong gravel disc rim that is still light enough for Road. Featuring a 21mm tubeless ready inner at 480g.
Description
The Speed Tuned GRTR21d is a Gravel (GR) Tubeless Ready Disc rim that is still light enough for road. This rim is 22mm tall, 25mm wide, with a 21mm tubeless ready inner profile that’s really strong, extremely stable, and at 480g, is still very weight competitive. You can run higher pressure road tube + tires on them, tubeless road, or wider/higher volume CX / Gravel type tires. They all work, and tire mounting occurs with minimal fuss. We build and ship these wheels with tubeless tape + valves installed, but you can always pop the valves out and run them with inner tubes. Valve remolval occurs via a simple loosening of the valve lock ring, takes about 10 secs. If you’re into racing (Doh! not that kind of racing), training, or you simply prefer to buy really nice gear, this is your starting and finishing point. That’s pretty straight forward.
Ready for a radical miracle? Just a walk in the park Cougar.
The Speed Tuned ST280 hubs feature 72 points of engagement, (5 degrees) via a 6 pawl free hub. The drive ring and pawls are super overbuilt in terms of diameter, (drive ring), height, (drive ring + pawls), and materials, (quality stainless). Their bearing placement is proper, in terms of overall design meant to promote hub function and durability.
DT Swiss 350 hubs are excellent as well, they are finished to incredible standards, and include DT Swiss’ Star Ratchet engagement system, (same exact drive mechanism as with their DT 240’s and 180’s). These hubs get the job done, hold up extremely well in an assortment of conditions, and have proven reliable even in the emerging context of high torque drive trains, (29er wheel bikes with 1×12 Eagle drive trains). Essentially, DT 350’s offer you the option of buying one of the best performing hubs available anywhere, for only a modest price bump. Given their huge value proposition, they are hands down a great option for any MTB rider that cares about their gear.
In “stock” form, these wheels are built with Sapim Leader black spokes in a 32 hole, three cross configuration front and rear. Sapim only produces spokes and nipples, their focus has translated to legendary quality and performance over time. If you didn’t know a thing about spokes, know that your wheels would come with a really top notch spoke product. That being said, we’re offering a spoke upgrade option, in the form Sapim Race or Sapim DLight 2.0/1.65/2.0 spokes. Essentially, you might be able to find a spoke product that approaches Sapim’s quality, but you’d be hard pressed to find a company that makes a better spoke product. All their spoke products, from straight gauge to their elliptically bladed and butted products, are all the best of the best. Sapim Dlight spokes will perform at the same relative level as DT Competition spokes for example, but will shave off approximately 75 – 80g from the wheel set.
The Speed Tuned GRTR21d Gravel Disc is a stellar wheel set option, in a field that’s composed of some of the best aluminum alloy rims ever. Given their level of performance, they are an unbeatable deal, (coupon codes here). We’re not joking around here. If you don’t have a lot of time to research all the rim options in the marketplace, if you don’t have a lot of money, and if you can find this product page, maybe that’s Magic.
Should you buy this wheel set? Entirely your call. Should you watch this short but sweet rock climbing video? Absolutely. One More Fun One.
Speed Tuned GRTR21d Gravel Tubeless Clincher Disc Specs
700c | Front Wheel | Rear Wheel | Wheel Weights (approx) | ||
Rim Info | Aluminum Alloy Clincher, double wall, tubeless ready | ||||
ETRTO | 584 x 21, 622 x 21mm please select | ||||
Weight | ≈455g (650b/27.5″), 480g (700c/29er) | ≈varies | |||
Sidewall | Disc Brake compatible | ||||
Inner Width | 21mm | ||||
Outer Width | 25mm | ||||
Rim Depth | 22mm | ||||
Rim ERD | 700c = 596 | ||||
Rim Tape | Tesa Tape | ≈ 15 – 18g/wheel (varies) | |||
Valve Type | Presta valve | ||||
Tire Type | Tubeless Ready OR Standard Clincher with inner tube | ||||
Tire Volumes | 650b/700 x 28 – 50mm (sweet spot is 35 – 40mm) | ||||
Nipple Info | 12mm Brass Chrome Plated @ ≈ 1g ea | 32H = 32g | |||
Spoke Info |
Sapim Leader 2.0mm (14g) Stainless Spokes Black ≈ 6.5g ea (26″) Sapim Race 2.0/1.8mm Double Butted Stainless Black ≈ 5.625g ea (26″) Sapim DLight 2.0/1.65 Double Butted Stainless Black ≈ 4.85 ea )26″ |
32H = 208g 32H = 180g 32H = 155g |
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Spoke Count | Front: 32H | Rear: 32H | |||
Spoke Pattern | Front: 3 Cross | Rear: 3 Cross | |||
Lengths | 290/292mm | 288/290mm | 288/292mm | 29mm | |
Hub Info | ST160 | DT350 | ST280 |
DT350 | |
Hub Weight | 152g | 174g | 280g +/- | 308g +/- | |
Hub Shell | Aluminum Alloy | ||||
Axle Info | Variable, Please select |
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Hole Ct | 32H | 32H | |||
DriveS PCD |
41 | 52 | 61 | 52 | |
DS Ctr to Flange | 22.5 | 35 | 19.5 | 19 | |
Non-DriveS PCD | 41 | 58 | 45 | 58 | |
NDS Ctr to Flange | 34 | 23 | 35 | 34 | |
Axle Material | Aluminum | Steel | Aluminum | Steel | |
Bearings | Sealed Cartridge Bearings | ||||
Bearing Size | M17287 EZO x 2 | 6902 x 2 | M17287 EZO x 4 |
Shim 6902 x 4 XD 6902, 6802 (2 ea) |
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Aluminum Freehub Options |
Shimano HG “splined” MTB series 8/9/10/11 speed = Road series 8/9/10 Shimano Road 11 Spd Shimano MircoSpline (12TA end cap only) MTB 12 Spd Speed Tuned ST280 only Sram XD 1 x 11 and 1 x12 Spd Sram XDR (road 1 x 12 Spd) Speed Tuned ST280 only |
Wheel Weights
650b – ST160/280 32H Race | F ≈ 806g | R ≈ 934g | Set ≈ 1740g |
650b – ST160/280 32H Dlight | F ≈ 778g | R ≈ 906g | Set ≈ 1684g |
650b – DT Swiss 350 32H Race | F ≈ 828g | R ≈ 962g | Set ≈ 1790g |
650b – DT Swiss 350 32H Dlight | F ≈ 800g | R ≈ 934g | Set ≈ 1734g |
700c – ST160/280 32H Race | F ≈ 831g | R ≈ 959g | Set ≈ 1790g |
700c – ST160/280 32H Dlight | F ≈ 803g | R ≈ 931g | Set ≈ 1734g |
700c – DT Swiss 350 32H Race | F ≈ 853g | R ≈ 987g | Set ≈ 1840g |
700c – DT Swiss 350 32H Dlight | F ≈ 825g | R ≈ 959g | Set ≈ 1784g |
(with an alloy nipple option, without QR’s or rim tape)
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- All options include rim tape and QR levers with the selection of QR end caps.
Additional information
Weight | 7 lbs |
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Dimensions | 30 × 7 × 26 in |
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