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  Back to News
4 Jun 2018
The Ultimate New Wheels for Road and Gravel Riding and Racing
Stanís NoTubes Introduces Grail CB7 and MK3 Rims and Wheelsets

Four years after the original Grail rim brought tubeless technology to road, gravel and cyclocross bikes, Stanís NoTubes is proud to announce the new Grail CB7 and Grail MK3 rims and wheelsets. Today's more versatile drop bar bikes demand a new kind of tubeless rim, one that's as capable of crushing 200 miles of gravel as it is scaling above category climbs. Optimized for tubeless tires and designed for disc brake-only use, the new Grail CB7 and MK3 rims and wheelsets combine the best characteristics of classic ultralight road wheels with new levels of reliability, control and comfort.

Grail CB7 and MK3 rims and wheelsets will be available from dealers, distributors and directly from this month. Their release follows the more economical Grail S1 wheelsets that were launched in 2017.

Grail CB7

The Grail CB7 rim is designed for 25-40mm tires and a maximum pressure of 85 psi/5.9 bar (with 25mm tire). Developed specifically for tubeless tires and disc brakes, the Grail CB7 uses Stanís patented low-profile rim shape, putting material only where itís needed. At only 300g, each Grail CB7 carbon rim is 30g lighter than even the lightest competing carbon gravel rims and over 100g lighter than many carbon road and gravel rims. Rotational weight is the most important and noticeable area of weight savings on a bike, and the Grail CB7 wheelset translates that weight savings into outstanding acceleration and a serious advantage on climbs.

The Grail CB7ís 21.6mm internal rim width creates a more stable base and optimizes tire shape for improved cornering stability and intuitive handling. The shape of the Grail CB7 keeps larger tires from folding over on the rim, even under the lower pressures and hard cornering of cyclocross and gravel races. The Grail CB7ís patented rim shape also prevents tire pinch flats and makes tubeless setup faster, easier and more reliable.

Incorporating Stanís radial impact absorbing carbon technology (RiACT), the Grail CB7ís low-profile shape and proprietary carbon layup work together to absorb road vibrations and distribute impact. Pioneered by Stanís based on our study of tubeless tires, the radial compliance of the Grail CB7 rim also helps eliminate pinch flats. The RiACT rim shape and layup process allow the Grail CB7 to soak up vibrations, letting you ride faster with less effort and making this the most comfortable rim available for both road and gravel.

The new Grail CB7 wheelset has already claimed a major podium with Geoff Kabush's third place finish this weekend at the 2018 Dirty Kanza, a self-supported, non-stop, 200-mile-long endurance race on the gravel and dirt roads of the Flint Hills region in east-central Kansas.

Grail MK3

The Grail MK3 is designed for 25-40mm tires and a max pressure of 110 psi/7.6 bar (with 25mm tire). Based on the original Grail rim shape, the new MK3 rim features lighter and stronger 6069 aluminum construction and weighs 440g. Lighter than the original Grail, the new Grail MK3 is also stronger, laterally stiffer and even more resistant to dents, making it ideal for longer rides both on and off the pavement.

Slightly narrower than the carbon CB7 model, the Grail MK3ís versatile 20.3mm internal rim width and reinforced, low-profile sidewalls are built to handle the higher pressures of tubeless road tires, low-pressure tubeless converted tires and conventional tires with tubes. Like all Stanís tubeless rims, the shape offers a more secure connection and airtight seal when used with tubeless tires. Stanís patented tubeless technology can seal most punctures while you ride, for unmatched durability and peace of mind on every ride.



Grail CB7 - Pro & Team

Uses: Gravel, Cyclocross, Road

Internal Rim Width: 21.6 mm

External Rim Width: 26.4 mm
Rim Depth: 19.3 mm
Optimal Tire Sizes: 28-40 mm

Hubs: Stanís Neo Ultimate with Speedsync 24-hole Front, 28-hole Rear (Pro); Stanís Neo with Durasync 24-hole Front, 28-hole Rear (Team)

Spokes: Sapim Laser Black 1.8/1.5/1.8mm (Pro); Sapim Force Black 2.0/1.7/1.8mm (Team); Nipples: Sapim Secure Lock Alloy Black

Wheel Weight: 1,277 g (Pro); 1,360 g (Team)

Rim Weight: 300 g

Max Tire Pressure: 85 psi (25mm), 70 psi (32mm), 55 psi (40mm)

Max Rider Weight: 86 kg or 190 lb (Pro); 104 kg or 230 lb (Team)

Grail MK3

Uses: Gravel, Cyclocross, Road

Internal Rim Width: 20.3 mm

External Rim Width: 24.0 mm
Rim Depth: 24.5 mm
Optimal Tire Sizes: 28-40 mm

Hubs: Stanís Neo with Durasync 28-hole Front, 28-hole Rear

Spokes: Sapim Force Black 2.0/1.7/1.8mm

Nipples: Sapim Secure Lock Alloy Black

Wheel Weight: 1,675 g

Rim Weight: 440 g

Max Tire Pressure: 110 psi (25 mm), 70 psi (32 mm), 55 psi (40 mm)

Max Rider Weight: 104 kg or 230 lb