Rim Gravel ZTR GRAIL MK3 Black

The Grail MK3 rim is designed to let you ride without limits. Whether youre rolling on fresh asphalt, crushing big gravel miles, or racing cyclocross, the Grail MK3 is ready to outperform the competition. Light, strong, and laterally stiff, the patented shape and 6069 series aluminum construction of the Grail MK3 makes it ideal for longer and more difficult rides both on and off the pavement. Stans patented tubeless technology can seal most punctures while you ride, for unmatched durability and peace of mind on every ride. The Grail rims versatile BST-R design is compatible with tubeless road tires, low-pressure tubeless converted tires, and conventional tires and tubes. The rims patented shape offers a more secure connection and airtight seal with tubeless tires and improves tire stability for superior handling in all conditions.
The Grail MK3s internal width and patented Bead Socket Technology rim design are optimized for 25-40mm tires. The truth is out that wider is faster, and the shape of the Grail MK3 rim lets you get the most speed from your tires, while also improving tire stability at speed and control in the corners. Nothing beats Stans patented tubeless rim design for getting the most performance from your tires.
All the advantages the Grail MK3 offers on the road are even more noticeable once the pavement ends. For cyclocross and gravel racing, the optimized tire shape and added stability offer a distinct advantage. The Grail MK3s rim shape is even designed to avoid tire pinch flats, allowing cross and gravel racers to run lower pressures that absorb impacts and improve traction.
No matter where your rides take you, choose the most trusted tubeless technology in the world. With the Grail MK3, there are no limits.  

Material: Alloy 6069
Size: 700c x 24.1mm
Internal width: 20.3mm
External width: 24.1mm
Depth: 24.5mm
Available in 24, 28 or 32 hole
Brakes: Disc Brake Only
ERD: 589
ETRTO: 622 x 20.3
ISO: 700cx24.1mm
Tape Width: 21-25mm
Black anodised finish
Max Spoke Tension: 125kgf (1225N)
Max Pressure with 25mm Tire: 110psi
Max Pressure with 32mm Tire: 70psi
Max Pressure with 40mm Tire: 55psi  

BST-R TECHNOLOGY
BST-R rims offer maximum versatility with the widest range of tires and pressures. Compatible with 25mm to 32mm tires at pressures up to 115psi both with and without tubes, BST-R rims are also compatible with wider, higher-volume tubeless tires at pressures below 45psi.  
BST-R Tubeless Technology for Higher Pressures
Our BST-R rim shapes are designed for maximum versatility, and can be used with a wide range of tires. Higher volume tires 32mm to 50mm wide can be used at pressures up to 45psi (3.1 bar). The BST-R rim shape can also be used with 25mm to 32mm road tires specifically designated as "tubeless" at pressures up to 115psi (7.9 bar). BST-R rims can also be used with tubes, at pressures up to 115psi.  
Key Differences Between BST and BST-R
Our BST system was developed specifically for tubeless use with pressures below 45psi. From our Iron Cross to our Hugo, we offer low pressure BST rims for tires in the 32mm to 122mm width range. The broader pressure range of our BST-R Series rims and wheelsets means they're optimized for tubeless use with tires in the 32mm to 50mm range at pressures of 45psi or lower, as well as 25mm to 32mm tires specifically designated as "tubeless" that feature reinforced beads designed for pressures up to 115psi. Both BST and BST-R rims and wheelsets may be used with tubes.
The patented design of our BST-R rims secures the tire's bead, creating an air tight seal that lets the tire expand to its full volume. The result is more traction and less rolling resistance for increased speed.  

WIDERIGHT TECHNOLOGY:
We all know the most important piece to the bicycle-terrain interaction is the contact patch between the tire and terrain, so tire profile and tire pressure play huge roles in bicycle performance and overall handling. But many rims just don't work well with the tires we're all using. Rims that are too narrow fail to offer sufficient sidewall support and protection to your tires and create a less stable shape. The result is less control in the corners, less traction on climbs, and more rolling resistance. Rims that are too wide also distort the tire profile, decreasing traction and control and driving impacts directly into the rim, negating the impact absorbing advantages of a tire's volume. Our WideRight rim widths are designed to strike the perfect balance between tire volume and sidewall function.
Though its roots can be traced back to the original Flow and Crest rim designs, we officially began the WideRight design philosophy with the introduction of our carbon rim shapes. With our new MK3 (always pronounced Mark 3) series, WideRight expands to our aluminum rims.
WideRight rim profiles allow the tire to achieve its proper shape, and that's the foundation for a great handling, fast-rolling, and responsive bike.
Our WideRight system makes it easy to find the perfect rim width for the tire size and volume you ride. Too narrow of an internal rim mixed with a high sidewall design gives you a "light bulb" tire profile while an ultra wide rim on a narrower tire will give you a flat to "bell shaped" tire profile. Neither of these scenarios give optimal tire profiles nor allows the tire to perform as intended.
WideRight profiles provide the optimal volume without distorting the tread pattern or the side knobs so each part of the tire is in the correct position for rolling and cornering, allowing for maximum traction and control as well as offering minimal rolling resistance. The WideRight profile advantages don't stop there. Proper tire profiles not only allow for optimal tire performance but also allow the tire to do its secondary job of protecting the rim as well as the tire's sidewall. A flat or bell-shaped tire profile leaves the tire exposed to sidewall cuts and creates undue chances for rim damage.  

Ride WideRigh recap:
-Optimizes tire profiles
- Maximizes traction
- Properly distributes tire volume
- Promotes the design intent of the tire profile and overall tire performance
- Reduces tire pinch flats and sidewall damage
- Allows tire to protect rim