Description
Wide rims for hard and tough rides
WTB / Double TB's highly durable aluminum rim KOM Tough i35 for hard trail and enduro riding.
This wide rim is designed to be tough enough for trail riding without worrying about rough surfaces, and for bikepacking with a lot of luggage.
High-strength 6069 aluminum is used for the material, ensuring excellent impact resistance while keeping the weight low. The Dual I-Beam structure inside increases lateral rigidity and durability, and supports stable riding even on rocky or rough surfaces.
The wide design with an inner width of 35mm is compatible with 2.6 to 3.0 inch tires, maximizing tire volume while providing a stable ground contact. Even with low-pressure settings, it is resistant to swaying and provides both traction and a sense of security.
WTB's unique TCS (Tubeless Compatible System) + Solid Strip construction makes tubeless setup easy and ensures high airtightness. The WTB Tubeless Compatibility System (TCS) and Solid Strip construction ensure easy tubeless setup and high airtightness, providing reliable performance in a wide range of situations, from everyday trail riding to enduro racing, and even bikepacking.
With a proven track record in the Enduro World Series, this is a reliable and durable bike for everything from hard riding to long distance.
[SPEC]
Material: 6069 aluminum
Inner width: 35mm
Outer width: approx. 39-40mm
Rim height: approx. 18-19mm
Number of holes: 32H
Tubeless: Compatible (TCS 2.0 / Solid Strip)
Tire: 2.6"-3.0" recommended
Use: Trail / Enduro / Gravity / Bikepacking
Weight: Approx. 570-610g (depending on size)
- Orders are shipped within 1–2 business days after payment is confirmed. Orders placed by 10:00 AM are generally shipped the same day.
- Messenger delivery is available within Nagoya City only (excluding complete bikes and framesets).
- We ship every day from Monday through Sunday, except on temporary closure days.
- Shipping destinations: throughout Japan and worldwide.
- Shipment may be delayed depending on credit card processing. If you would like to request a delivery date or time, please add a note in your cart.
- All orders are shipped from Circles.
- For damage or loss during transit, please contact the carrier.
Complete Bike Shipping within Japan
- A shipping fee of ¥9,900 (tax included) applies to complete bikes. Additional charges may apply for Okinawa and remote islands.
- After purchase, we perform a final inspection before shipping. Please allow 1–2 weeks in some cases.
- For packing, some parts may be removed. We strongly recommend having the bike reassembled and checked by your local bicycle shop before riding.
- We will contact you by email with delivery details.
- Products are also sold in-store, so availability may change before the order is finalized.
Frameset Shipping within Japan
- Flat-rate shipping within Japan: ¥5,500 (tax included). Additional charges may apply for Okinawa and remote islands.
- Shipping rates for OMNIUM framesets and complete bikes differ.
- We will contact you by email with delivery details.
- Facing and tapping preparation for framesets purchased from Circles is available at no additional charge. Details will be provided after purchase.
- Headset and bottom bracket installation are also available for an additional labor fee. Please contact us if required.
Custom & Stock Wheel Shipping within Japan
- A shipping fee of ¥2,000 (tax included) applies. Additional charges may apply for Okinawa and remote islands.
- Stock wheels undergo a final inspection by a mechanic before shipping. Please allow approximately 3 business days for dispatch.
For international orders, shipping costs vary by destination. Please check the amount shown at checkout.


