With weights starting from only 890 grams for the pair (24/24h XD cassette, 12K rims +/- 2% tolerance) GrigioCarbonio Primato AS26 are the lightest 29" MTB tubeless ready wheels on the market.
These wheels are assembled with straight-pull spokes, 24x or 28x. They are assembled with Boost hubs but can also be assembled with other hub standards (for Lefty or RS-1 forks too). They're available with Shimano 11s cassette body, Sram XD 11-12s cassette body or Shimano Micro Spline 12s cassette body. They're available with 12K or UD carbon rim finishing, glossy or matte.
Although their impressive weight, these wheels are also strong and reliable due their incredible rims, GrigioCarbonio HardWheel AS26 T1000, which are their greater goal!
They're 29 mm wide (26 mm inner channel) and 25 mm height. They're asymmetrical with 3 mm offset.
Sticker decals are available in many colors, please specify your choice inside order details or just e-mail us for any demand.
Hardwheel AS26 T1000 rims are compatible with tubeless or tubeless ready tires, latex sealant conversion systems included. The asymmetrical shape allow a better overall performance (stiffness, precision, reliability) due to lower spoke tension difference between wheel sides. HardWheel AS26 T1000 rims are monocoque made with T1000 high module carbon fibre, the most advanced and performable on the market that allows to obtain an incredible weight/stiffness ratio. But the main and more important feature of T1000 fiber is its great elasticity (25% more than T800), so a better impact resistance, less vibrations and a superior comfort...all this is really great for a MTB rim! Please take note that also Formula One driver's safety Roll Cages are made with this special material!
T1000 carbon fiber is at lean 4 times more expensive tan T700 and T800 carbon fibers (which are usually used to make carbon fiber rims). GrigioCarbonio use 100% T1000 fibers and T1000 specific expensive resin and is proud to offer top quality products with unique features at a competitive price, that's the real goal.
HardWheel AS26 T1000 rims were tested for a long time, not only lab tested but also on the race tracks, where national and international top riders abused them without problems...they're very happy with their performance!
Every GrigioCarbonio product withstand UNI EN 14xxx safety tests and got approval in CSI labs, because safety comes always first!
GrigioCarbonio is an Italian brand that was born after 20 years of carbon fiber experience by SG Compositi (famous for high-end aerospace and automotive partnerships). So all this experience and the habit with most severe quality standards is a guarantee for top products!
HardWheel AS26 T1000 rims are incredibly light, only 255 (front) - 265 (rear) grams each, actually the lightest MTB 29er tubeless ready rims in the world, but due their top quality materials and manufacturing, they haven't got any rider weight limit, and this is really impressive!
Also the hubs are top quality ones, we are talking about the famous Extralite HyperBoost 3 hubs, which are the only choice to assemble an ultralight wheelset!
Extralite HyperBoost 3 hubs are fine mechanics masterpieces. They're made of 7075T6 aluminum ably machined to obtain smooth and sexy shapes. They've got straight-pull flanges for straight-pull spokes which allows stronger and stiffer wheels without weakness typical of j-bend spokes.
Extralite HyperBoost 3 hubs has got an hyper engineered front engagement system with 36 engagement positions for a fast and smooth action with minimal friction resistance (as option with an extra fee are available also with 48 points of engagement).
Rolling action take advantages from the use of Enduro ABEC5 stainless steel sealed bearings; this kind of material assure a longer bearing life also with severe conditions. An external bearings pre-load system allows to obtain the perfect side play for the maximum performance (rolling resistance, smoothness and lasting). hyper Ceramic bearings are also available as option.
Here are all the hubs standards available :
FRONT WHEEL :
- QR15 Boost (15x110) - HyperBoost 3 F
- RS-1 Predictive Steering (15x110 mm) - HyperWiz
- Lefty 2.0/Lefty Ocho - HyperLefty 3
REAR WHEEL :
- QR12 Boost (12x148 mm) - HyperBoost 3 R
Another exclusive feature of the Primato AS26 wheels is the use of the revolutionary Berd textile Dyneema spokes (made in the USA). Berd spokes are very expensive, complex to make and to assemble but they really have many advantages.
Berd spokes are made with an advanced polymer called Ultra High Molecular Weight Polyethylene (UHMWPE) also known as Dyneema. Dyneema has 12 times the strength / weight ratio of steel and floats on water. This is what makes Berd spokes the lightest, strongest and most durable ever invented (thanks to the use of this special materia)!
With only 2.5 grams per spoke, Berd spokes are the lightest in the world and allow you to save several tens of grams compared to even the lightest steel spokes. As is known, the weight saved on the rotating masses is much more important and generates greater benefit than elsewhere.
Despite their significantly lower weight, Berd spokes have even better mechanical characteristics than traditional steel spokes: greater tensile strength, lower elongation, greater resistance to corrosion and atmospheric agents. They also have a very large capacity to dampen vibrations and impacts, so they give life to very comfortable and very resistant wheels that are free from the problems of fatigue life typical of metals. The greater comfort is not at the expense of the overall stiffness or the reactivity that remain at the top of the category.
Super light spokes but also very reliable and long-lasting (straight-pull head spokes are already more resistant as they do not have the classic bent head, which is the typical weak point of traditional spokes), several laboratory tests have confirmed their positive effect on the whole. wheel that is overall more resistant and more capable of absorbing impacts without suffering permanent damage.
Wheels assembled with Berd spokes are built with a gradual, multi-day tightening process to reduce the amount of tension loss that will occur after the wheels are installed on a bicycle. Despite this, the tension in the wheels with Berd spokes will decrease by about 30% in the first 6 months of use due to the natural settling process of the fibers (the phenomenon is known as "Creep") but, unlike the metal spokes, they retain all their strength regardless of tension. This loss of tension does not affect the life or longevity of the Berd spoked wheels and there is no need to increase the tension. The stiffness of the wheels in fact depends weakly on the tension of the spokes (less than 10%), if you wish you can still proceed with re-tightening after 3-6 months.
Spoke nipples are made of aluminum and they're double square type for a better fitting with rim holes. These nipples has also got a special system that avoid spokes loosen.
With weights starting from only 890 grams for the pair, GrigioCarbonio Primato AS26 wheels are the lightest MTB 29" tubeless ready wheels on the market. All the weights has got 2% tolerance and they refer to 12k rims, UD finish adds about 10 grams for the complete wheel-set. A They're indicative weights subject to modify from the manufacturers of any wheels parts.
GrigioCarbonio Primato AS26 wheels are pieces of art and absolutely top level! Their weight is impressive but their performance is more impressive! These wheels are not only incredible fast but also very stiff and super comfortable and of course strong and reliable too! Really not so common for ultralight carbon wheels, they worth all the money spent! When you will try them you will no longer be able to ride without them!
Given the particularity and exclusivity of the product, the various options available and the not easy availability of components please contact us before placing any order, just to check availability and delivery time.
Rims, hubs, and wheel-building are 100% made in Italy
- Weight :
- From 890 grams/pair (+/- 2%)
- Rim shape :
- Asymmetrical (3 mm offset)
- Diameter :
- 29" (622 mm)
- ERD :
- 591 mm
- Height :
- 25 mm
- Width :
- 29 mm
- Inside width :
- 26 mm
- Material :
- T1000 Carbon Fiber Rims, Aluminium hubs, Dyneema Textile Spokes
- Finish :
- 12K or UD rims, Glossy or Matte, black anodized hubs, black spokes
- Graphics :
- Use :
- MTB XC, XCO, Marathon
- Holes :
- 24-24 / 24-28 / 28-28 h
- Free-Wheel :
- Shimano 11s ; Shimano Micro-Spline 12s ; Sram XD 11-12s
- Fitting :
- With Boost frames/forks and tubeless/tubeless ready tires
- Max rider weight :
- Version :
- Tubeless ready disc
- Max Pressure :
- 3 bar
- Front Hub Standard :
- QR15 Boost (15x110 mm) - Lefty 2.0
- Rear Hub Standard :
- QR12 Boost (12 x 148 mm)
- Disc brake standard :
- International Standard 6 holes