Introduction

The carbon fiber bicycle industry has been innovating and advancing all the time. Being lighter and stronger has always been the pursuit of the professional bicycle industry. The Supreme Edition was created to explore the performance and weight limits of carbon fiber materials applied to bicycle wheels. We know that different materials would affect the performance and weight of rim products. What if we change the appearance design of a rim? Would it bring any difference or improvements in the strength and weight?

We have found that the most vulnerable part of a rim is the rim lip. If we could enlarge the area of rim lip where it contacts to the tire, in theory, under the same impact force, the pressure on a rim who has a wider lip area would be less, which could performance a higher impact resistance. Based on this theoretical premise, we newly designed the Supreme Edition Omega 40 Super Enduro mountain rim with a rim lip width of 4.0mm, which is thicker than the other AM or Enduro rims with rim lip thickness of 3.0mm or 3.5mm. The contact area between the rim lip and the tire is wider, the impact resistance increases.

Based on the Super Enduro version, we adjusted the new stacking technology and the proportion of materials to develop a Downhill version. This Downhill version is heavier but also stronger.

We continue to explore and adjust the stacking manufacturing technology, and finally successfully completed the development of the Omega 40D Down Hill rim. The impact test reaches 175J which strength increases 10% than the premium edition DH rim like NXT29XD39 (160J), the weight also decreases a lot. This is a huge improvement. TEST VIDEO

This rim could be used for Trail, All Mountain, Big Mountain, Freeride, Enduro (and Super Enduro), Downhill and Dirt Jump. The tire size for this model of rim is recommended at 2.2" ~ 2.75". The tire pressure is recommended at 20 ~ 36 psi.

What's in the Box

Carbon Rim(s)

Tubeless Kits (Tubeless Valve Stem x 2 + Tubeless Tape x 1)

Documentation

Learn more

Bicycle Tire Pressue Chart

Bicycle Tire Size Chart

What is ASTM Classification?

What's the difference in XC vs. Endurance? Enduro vs. All-mountain?

What is the difference between weaves UD, 3K and 12K?

What is Free Coating Manufacturing (FCM) process?

What is ERD (Effective Rim Diameter)?

How much spoke tension should I use?

Basic

Name: Omega 40D
Code: NXT29VM40D
Rim Type: Mountain Bike (Clincher, Hookless)
Materials: Carbon Fiber (Mixed)
Tubeless Compatible: Yes
Drillings: 28, 32
Edition: Supreme Edition
ASTM Classification: Condition 5
Warranty: 5 Years
Release Time: April 2024

Specification

Size: 29"
BSD (Bead Seated Diameter): 622mm
ERD (Effective Rim Diameter): 593mm
External Width: 40mm
Internal Width: 32mm
Rim Height: 24mm
Spoke Bed Offset: 3.0mm
Weight: 480g
Valve Hole Diameter: 6.5mm (Presta)
Spoke Holes Diameter: 4.5mm
Assembly Hole Diameter: 7.5mm
Rim Lip Thickness: 4.0mm
Drain Holes: Yes
Strength: 175J (Pointed Hammer, 25psi)

Recommendation

Tire Size: 2.25" ~ 2.9"
Tire Pressure: 19 ~ 32psi
Spoke Tension: 100 ~ 130kgf
Max System Weight: 156Kg (Down Hill) / 177Kg (Enduro)

Appearance

Weave: UD
Finish: Free Coating, Matte, Glossy

Application

application: Trail, All Mountain, Big Mountain, Freeride, Enduro (and Super Enduro), Down Hill, Dirt Jump, Electric bike (eBike)
Notes: This rim is designed for tubeless compatible or tubeless ready tires. Inner tubes are ok, but the tire must have tubeless beads for safe retention.

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[Supreme Down Hill] Omega 29" Mountain Bicycle Carbon Rim 40mm 480g

Unit Price: 360 USD