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FSA 650b Road and Gravel Disc Brake Wheelset - Tubeless


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New breed.

Technically, the tubeless-compatible 650b Road and Gravel Disc Brake Wheelset is a mountain bike wheelset. We say "technically," because the latest breed of all-terrain bikes mean that 650b—or road plus, MX, etc.—are built to accommodate smaller diameter rims and seat big tires. Whether you're looking for a plush ride across hundreds of miles of bikepacking or you want to ride up a canyon and then ride up the singletrack at the top, FSA's proven alloy construction and the added tire clearance of 27.5in wheels will empower you.

  • An all-terrain adventure wheelset for the gravelliest grinder
  • Tubeless compatibility increases cushion and traction
  • Tape and valves included for easy tubeless conversion
  • Alloy mean business when the road gives way to gravel and dirt
  • 2-cross spokes handle torsional disc brake forces better than radial
  • Compatible with quick-release dropouts out of the box
  • Includes 15mm and 12mm end caps for the front and 142mm end caps for the rear
  • Item #FSA002X

Rim Material
Wheel Size
Tire Type
Rim Depth
Rim Width
[external] 26.1mm, [internal] 22mm
Brake Compatibility
centerlock disc
Front Axle
9mm quick-release, 15mm thru-axle, 12mm thru-axle
Rear Axle
130mm quick-release, 142mm thru-axle
Spoke Nipple
Claimed Weight
3lb 15.1oz (1790g)
Recommended Use
Manufacturer Warranty
2 years

Tech Specs

California Proposition 65


This product can expose you to chemicals including Lead, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to

What do you think about this product?


>Rating: 2

Incorrect Weight

I returned this product before using it

These wheels do not weigh 1590 grams. FSA's website said they weigh 1790 grams. My scale at home confirmed the weight. I returned the wheels because I wanted something under 1600 grams. I told Backcountry about the discrepancy, but it seems they have not fixed it. Other than that, the wheels seem to be built very well. The hubs were nice and the rims seemed burly. They were just too heavy for my needs.

It looks like they now have revised the claimed weight


hello, does anyone know what width of rim tape to use with these wheels for tubeless setup? Edit: If anyone is still reading these, I found the answer. Their service manual says 25 mm.


Is the rear spacing legitimately 130qr or 135, hoping it is just listed wrong and is 135