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Nextie Omega 40-27 MTB carbon rim, photo 1 of 2

From the maker

Full specification

Basic

ModelOmega 40-27
Rim TypeMountain Bike (Clincher, Hookless)
MaterialsCarbon Fiber (T1000 + T800 + T700)
Brake InterfaceDisc Brake
EditionSupreme Edition
ASTM ClassificationCondition 5
Warranty5 Years
Release TimeMarch 2025

Dimensions

Size27.5"
BSD (Bead Seated Diameter)584mm
ERD (Effective Rim Diameter)555mm
Drillings28, 32
External Width40mm
Internal Width32mm
Rim Height24mm
Spoke Bed Offset3.0mm
Rim Lip Thickness4.0mm
Weight400g
Valve Hole Diameter6.5mm (Presta)
Spoke Holes Diameter4.5mm
Spoke Holes AngleAxial 6° | Radial 5°
Assembly Hole Diameter8.5mm
Drain HolesOptional
Tubeless CompatibleYes
Strength150J (Pointed Hammer, 25psi)

Appearance

Carbon WeaveUD
FinishFree Coating, Matte, Glossy

Recommendation

Tire Size2.15" ~ 2.9"
Tire Pressure19 ~ 32 psi
Spoke Tension100 ~ 130kgf
Max System Weight152Kg (Enduro) / 160Kg (All Mountain)
Ideal Valve Stem Length36mm

Discipline

DisciplineTrail, All Mountain, Big Mountain, Freeride, Enduro (and Super Enduro), Electric bike (eBike)

Best Features

  • Material Upgrade: Toray T1000 Aerospace Grade Carbon Fiber Added.
  • 3rd-Generation Layer-up Structure.
  • Highly Strict Technical Test Methods — 150J (Pointed Hammer, 25psi)
  • 24mm Low-Profile Optimization for Riding Comfort and Tubeless-Ready.

About this rim

The details

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 the tire, in theory, under the same impact force, the pressure on a rim with a wider lip area would be less, which could perform a higher impact resistance. Based on this theoretical premise, we newly designed the Supreme Edition Omega 40-27 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 of the rim increases.

We continue to explore and adjust the stacking manufacturing technology, and finally successfully completed the development of the Omega 40-27 Super Enduro rim. The impact test reaches 150J, which is 25% stronger than the premium edition enduro rim. This is a huge improvement. IMPACT TEST VIDEO.

Test Results

Impact Test Data (Super Enduro)

* Impact Test 4 at 150J represents the validated safe maximum for the Omega 40-27 Super Enduro rim. Testing was concluded at this level.

This rim could be used for Trail, All Mountain, Big Mountain, Freeride, Enduro (and Super Enduro). The tire size for this model of rim is recommended at 2.15" ~ 2.9". The tire pressure is recommended at 19 ~ 32 psi.

What's in the Box

Carbon Rim(s)

Nextie · MTB rims

Nextie Omega 40-27 MTB carbon rim

£377

Inc. VAT · UK delivery calculated at checkout · free UK delivery over £200

Ordered in for you · About 6 weeks

We don't hold this in stock. As an authorised Nextie distributor we order it in for you when you buy — usually about 6 weeks. We'll email you when it ships.

Nextie decals: None

Ordered in for you: About 6 weeks. We email you when it arrives.

  • ✓ Free UK delivery over £200, or collect from the workshop
  • ✓ 14-day returns on online orders
  • ✓ Secure payment: card, Apple Pay, Google Pay or PayPal

Secure checkout by Stripe — card, Apple Pay, Google Pay or PayPal. We never see your card details. Returns and cancellations.

Wheel size27.5"
Weight400g
ERD603 mm
External / internal width40 / 32 mm
Tyre range2.15"–2.9"
Max system weight160 AM / 152 Enduro kg

Want it built into a wheel? Use the wheel builder.

Details

Nextie Omega 40-27 27.5" MTB carbon rim. Ordered in for you from Nextie, or have us hand-build it into a wheel.

Want it fitted? Book it into the workshop.

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