GRIT 4540

(2 customer reviews)

$2,800.00

The newest member of the family, the GRIT 4540 was designed from the ground up to recalibrate your expectations from a carbon wheelset. Lightweight? Got it. Amazing stiffness? Check. Versatile, snappy, fast, stable? Always. Ideal for climbing and all purpose road OR gravel/CX (mixed terrain, gravel, cyclocross). How do we do it? Taking experience from the 6560, we launched the GRIT with our variable depth sinusoidal cross section, for unrivaled cross wind stability. We also introduced a slightly varying width to the profile, and optimized our carbon layup, focusing around high stress areas. The nipple bed has been completely re-engineered to provide greater carbon thickness in that area, while removing material where not needed. 21mm hook to hook and 29.9mm at the widest point. Next level stuff? Try a uniform, hole-less tire bed. By removing holes from the tire bed, the wheel becomes incredibly stiff (holes+carbon aren’t best friends). That allowed us to make the tire bed thinner (lighter) while providing greater hoop stiffness (stronger). Oh yeah, no more tubeless tape either (YOU’RE WELCOME). The GRIT 4540. Available laced to White Industries or TUNE, Rim or Disc. Tubeless and podium ready. Reserved for those with GRIT.

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Description

The newest member of the family, the GRIT 4540 was designed from the ground up to recalibrate your expectations from a carbon wheelset. Lightweight? Got it. Amazing stiffness? Check. Versatile, snappy, fast, stable? Always. Ideal for climbing and all purpose road OR gravel/CX (mixed terrain, gravel, cyclocross). How do we do it? Taking experience from the 6560, we launched the GRIT with our variable depth sinusoidal cross section, for unrivaled cross wind stability. We also introduced a slightly varying width to the profile, and optimized our carbon layup, focusing around high stress areas. The nipple bed has been completely re-engineered to provide greater carbon thickness in that area, while removing material where not needed. 21mm hook to hook and 29.9mm at the widest point. Next level stuff? Try a uniform, hole-less tire bed. By removing holes from the tire bed, the wheel becomes incredibly stiff (holes+carbon aren’t best friends). That allowed us to make the tire bed thinner (lighter) while providing greater hoop stiffness (stronger). Oh yeah, no more tubeless tape either (YOU’RE WELCOME). The GRIT 4540. Available laced to White Industries or TUNE, Rim or Disc. Tubeless and podium ready. Reserved for those with GRIT.

Additional information

Hubs

White Industries, TUNE

Brake Type

Rim, Disc

Rim Weight

415g (Disc), 430g (Rim)

Hook to Hook

21mm

Depth

45 to 40mm, Variable

Max Width

29.9mm

Freehub Body

SRAM XDR, Shimano 11S

2 reviews for GRIT 4540

  1. Ken Zabielski

    Marty,

    I just wanted to close the loop with you and tell you about my spring training with my new PCW GRIT 4540’s with White Industries T11’s, on my new custom made Spectrum titanium road bike with Campy Super Record 12-speed group.

    Let me tell you how these wheels ride. The roads in Mississippi are mostly chip and tar with big chips. The roads are really coarse and are hard on bike and body. The wheels seem to be very stiff, but at the same time absorb the shock really well. It also helps that my bike also has carbon cranks, seat post, and handlebars. But I believe that the 4540’s absorb most of the shock. This is my second spring training in the Meridian, Mississippi area. Last year’s bike had a lot of aluminum on it, and it beat me up a whole lot.

    The wheels feel really stable on the road with tire pressures of 75 psi front and 80 psi rear. During the first week I used Conti 28mm tires. During the second week I switched to 25’s. The 28’s were plush. The 25’s were a lot more livelier, but did not feel any more rough than the 28’s.

    I’ve ridden the bike about 350 miles here with more than 15,000 feet of climbing. Because of the way we build these wheels at Spokes my 4540’s have maintained their trueness and roundness, and have kept centered.

    We have a lot of screaming downhills on these coarse roads. Today I was descending my bike at around 45 mph on a mile-long downhill; the wheels gave me confidence on the descent. The wheels also handle the heavy cross winds well.

    I am totally pleased with the way my 4540’s handle. They will remain the primary wheels for this bike. Great investment.

    Ken

  2. Matt (verified owner)

    I recently upgraded my Trek Domane SL-8 stock Bontrager Aeolus Pro 3 wheels to a set of GRIT 4540 wheels with White Industries hubs and I’ve been thrilled with the results – gaining both speed and confidence. The bike rolls much more smoothly, absorbs bumps even better than before, and handles the gusty cross winds by the shore much better than my shallower Aeolus Pro wheels.

    I also want to give a shout-out to the Princeton Carbonworks staff, who provided some great advice and turned the order around very quickly.

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