The Grail is the newest road offering from Stan’s NoTubes, and it’s disc specific – there’s no brake track.  With the Grail, Stan’s has taken aim at creating a versatile rim well suited to every variety of disc brake 700c bike.  Here’s the stats.

DATA (actual measured values)

Weight: 464g
Outer Width: 24.1mm
Inner Width: 20.4mm
Depth: 24.4mm
Drillings: 24, 28, 32

The Grail's graphics are the new style that will soon roll out to all Stan's rims. The decals are easily removed for a cleaner look if preferred.
The Grail’s graphics are the new style that will soon roll out to all Stan’s rims. The decals are easily removed for a cleaner look if preferred.

The Grail bridges the gap of Stan’s older 700c offerings the Alpha and Iron Cross rims.  The Alpha rims were made for road use with skinny tires, the Iron Cross for ‘cross use with ‘cross tires.  The problem was, they didn’t cross over much.  The Iron Cross lets you convert non-tubeless CX tires to tubeless (much like Stan’s MTB rims), but it didn’t work well with Road Tubeless tires.  The Alpha was the opposite.  Modern day bikes, with the surge in popularity of gravel/adventure road bikes, are blurring the lines between traditional road and cross bikes.  They have road-ish geometry, but room for larger tires which greatly expands where they can be ridden.  Obviously, disc brakes are coming on strong on the road, and multi-surface adventure bikes are an obvious fit for discs.

The Grail uses Stan
The Grail uses Stan’s patented Bead Socket Technology tubeless design.  The generous width will do good things for your tires.

Enter the Grail – the anyroad disc brake rim.  Wanna use 23mm Road Tubeless tires? Go for it.  Want to set up some 40mm WTB Nano’s and tackle a gravel race or some light singletrack?  Go ahead.  The Grail is designed to work with both types of tires, traditional road, and CX or monster-CX sizes.

Maximum tire pressure guidelines are printed on the decals for a variety of tire sizes.
Maximum tire pressure guidelines are printed on the decals for a variety of tire sizes.

The wide 20.4mm inner width will open up tires for more air volume allowing less air pressure to be used.  The outer width, depth, and shape of the rim were designed to prioritize aerodynamics.  It’s the deepest rim Stan’s has ever made, and uses a modern rounded aero shape.  They say it’s the fastest/most-aero rim they’ve ever made, but I haven’t seen any wind tunnel data comparing it to older Stan’s rims or any other rim yet.  Someone will put them in a tunnel though I’m sure.

The blunt rounded profile is inline with current aero trends. The rounded shape is less susceptible to getting pushed around in crosswinds than older V-shaped rims.
The blunt rounded profile is inline with current aero trends. The rounded shape is less susceptible to getting pushed around in crosswinds than older V-shaped rims.

Here’s an idea of how weights would look built up to several popular hubsets.  For comparative purposes all of these are built with 28 Sapim CX-Ray spokes front and rear with alloy nipples.  Actual spoke/nipple count and type will change the weights of course.

  • Shimano CX75 hubs & Grail Rims: 1,690g
  • White Industries CLD hubs & Grail Rims: 1,605g
  • Industry Nine Torch Classic Disc Road hubs & Grail Rims: 1,550g
  • Chris King R45 Disc hubs & Grail Rims: 1,635g

If you’re interested in a set spec’d and built just for you, you know who to talk to!