From the maker
Full specification
Basic
| Model | Omega 40D-27 |
|---|---|
| Rim Type | Mountain Bike (Clincher, Hookless) |
| Materials | Carbon Fiber (T1000 + T800 + T700) |
| Brake Interface | Disc Brake |
| Edition | Supreme Edition |
| ASTM Classification | Condition 5 |
| Warranty | 5 Years |
| Release Time | March 2025 |
Dimensions
| Size | 27.5" |
|---|---|
| BSD (Bead Seated Diameter) | 584mm |
| ERD (Effective Rim Diameter) | 555mm |
| Drillings | 28, 32 |
| External Width | 40mm |
| Internal Width | 32mm |
| Rim Height | 24mm |
| Spoke Bed Offset | 3.0mm |
| Rim Lip Thickness | 4.0mm |
| Weight | 450g |
| Valve Hole Diameter | 6.5mm (Presta) |
| Spoke Holes Diameter | 4.5mm |
| Spoke Holes Angle | Axial 6° | Radial 5° |
| Assembly Hole Diameter | 8.5mm |
| Drain Holes | Optional |
| Tubeless Compatible | Yes |
| Strength | 175J (Pointed Hammer, 25psi) |
Appearance
| Carbon Weave | UD |
|---|---|
| Finish | Free Coating, Matte, Glossy |
Recommendation
| Tire Size | 2.15" ~ 2.9" |
|---|---|
| Tire Pressure | 20 ~ 32 psi |
| Spoke Tension | 100 ~ 130kgf |
| Max System Weight | 156Kg (Down Hill) / 177Kg (Enduro) |
| Ideal Valve Stem Length | 36mm |
Discipline
| Discipline | Trail, All Mountain, Big Mountain, Freeride, Enduro (and Super Enduro), Down Hill, Dirt Jump, Electric bike (eBike) |
|---|
Best Features
- Material Upgrade: Toray T1000 Aerospace Grade Carbon Fiber Added.
- 3rd-Generation Layer-up Structure.
- Highly Strict Technical Test Methods — 175J (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 40D-27 Down Hill 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-27 Down Hill rim. The impact test reaches 175J, which is 10% stronger than the previous Premium Edition DH rim NXT29XD39 (160J), and also lighter in weight. This is a huge improvement. IMPACT TEST VIDEO.
Test Results
Impact Test Data (Down Hill)
* Impact Test 4 at 175J represents the validated safe maximum for the Omega 40D-27 Down Hill rim. Testing was concluded at this level.
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 2.15" ~ 2.9". The tire pressure is recommended at 20 ~ 32 psi.
What's in the Box
Carbon Rim(s)
Nextie · MTB rims
Nextie Omega 40D-27 MTB carbon rim
£392
Inc. VAT · UK delivery calculated at checkout · free UK delivery over £200
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.
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 size | 27.5" |
|---|---|
| Weight | 450g |
| ERD | 603 mm |
| External / internal width | 40 / 32 mm |
| Tyre range | 2.15"–2.9" |
| Max system weight | 156 DH / 177 Enduro kg |
Want it built into a wheel? Use the wheel builder.
Details
Nextie Omega 40D-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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