WTB KOM Light i25 Rim

Color: Black
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One of the lightest WTB alloy rims, KOM Light i25 combines high-end performance and tubeless dependability. It's sprightly enough for 200 miles of gravel, yet resilient enough for daily trail riding.


  • 25 mm inner rim width is best suited for gravel bikes with 41–50mm tires; this is also the rim of choice for WTB 650 x 47 mm Road Plus tires
  • Open-cavity rim profile eliminates unnecessary weight while also reducing radial stiffness to create a smoother ride
  • Crafted from strong, dependable 6069 aluminum alloy to endure daily hammering on your trail bike
  • 4D angled spoke drilling eliminates binding and lateral loading, and disperses tension more evenly over a greater area
  • Durable nylon TCS Solid Strip lies between the rim and tubeless tape to prevent the tape from pushing into the spoke holes, ensuring a smooth interface between tire and rim
  • The smooth surface makes it easier to mount a tire by preventing air from escaping around the bead at each indent during inflation
  • Solid Strip also protects the airtight system from puncture in the case of a broken spoke
  • TCS (Tubeless Compatible System) is a standardized tubeless system designed by WTB to meet international ETRTO standards
  • TCS components reduce weight, increase traction and virtually eliminate flats for a dependable tubeless system
  • 32-hole


View all WTB Bike Rims

Technical Specs

Best Use

Gravel Cycling

Tire Type

Tubeless Ready

Wheel Size

27.5 IN X 32H: 27.5 inches

29 IN X 32H: 29 inches

Spoke Hole Count


Internal Rim Width

25 millimeters

External Rim Width

29 millimeters

Effective Rim Diameter

27.5 IN X 32H: 566 millimeters

29 IN X 32H: 606 millimeters

Rim Depth

17.75 millimeters

Brake Compatibility

Disc Brake

Rim Material


Rim Bead Type


Rim Symmetry


Valve Type


Tubeless Compatible



27.5 IN X 32H: 430 grams

29 IN X 32H: 459 grams



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