Alpha 36S Wheelset – 29" Carbon Cross Country Mountain Wheelset from 868g
868g · The Lightest 29" Carbon XC Wheelset in Its Class
Specification
Basic
- Model: Alpha 36S Wheelset
- Type: Mountain Bike Cross Country
- Brake Interface: Disc Brake
- Holes: 28 front + 28 rear
- Edition: Supreme Edition (Alpha)
- ASTM Classification: Condition 3
- Including: Complete Wheelset + Tubeless Valve Stems + Tubeless Tape
- Warranty: 5 Years
- Release Time: February 2025
Specifications
- Size: 29"
- Wheelset Weight: From 868g
- Rim Finish: UD, Free-Coating
- Rim Model: Alpha 36S front + Alpha 36S rear
- Valve Hole Diameter: 6.5mm Presta
- Hubs: NEXTIE Rollingstar. DT Swiss. Onyx Vesper.
- Drain Holes: Optional
- Spokes: Sapim CX-Ray, Carbon Spokes
- Nipples: Sapim Polyax Secure Lock (Aluminum)
- Tubeless Compatible: Yes
- Tubeless Ready: Optional
Recommendation
- Tire Size: 2.0" ~ 2.75"
- Tire Pressure: 22 ~ 32psi
- Spoke Tension: 120 ~ 130kgf
- Max System Weight: 150Kg
- Ideal Valve Stem Length: 36mm
Discipline
Best Features
- Feature 1: 1. Advanced Single-Point (ASP) Reinforcement at Spoke Holes and Valve Stem Hole, Resulting in Rims that are Stronger and Lighter.
- Feature 2: 2. Material Breakthrough: Toray T1100 + T1000 Aerospace Grade Carbon Fiber.
- Feature 3: 3. 3rd-Generation Layer-up Structure.
- Feature 4: 4. Highly Strict Technical Test Methods — 105J for 28Holes <Pointed Hammer, 25psi>.
- Feature 5: 5. 23mm Low-Profile Optimization for Riding Comfort and Tubeless-Ready.
Description
Introduction
NEXTIE offers a full line of custom bike carbon rims for mountain bicycle wheels, providing tailor-made solutions to meet your specifications. We have years of experience in wheel-building, and we cater to the needs of each customer. In our inventory, we offer different sizes carbon fiber mountain bicycle rims.
At NEXTIE, we build each wheel with precision and care, you can be confident that you are getting a high quality custom bicycle wheelset when you buy from us.
If you are interested in customizing your bike with new and stylish rims, the experts at NEXTIE are ready to make your bike look great and improve your performance on the trails. We have been serving the cycling community since 2013, and all our custom bike rims are made here in China.

Wheelset Weight Reference
868g : Alpha 36S (220g) + DT180 EXP hubs + Carbon Spokes Oval #5 + Alloy Nipples
1058g : Alpha 36S (220g) + DT180 EXP hubs + Sapim CX-Ray + Alloy Nipples
Carbon Mountain Rims
Alpha 36S Carbon Rims. Supreme Cross Country. 220g 28Holes.
Hubs
NEXTIE Rollingstar II, DT Swiss 180 EXP / 240 EXP / 240 DEG, Onyx Vesper.
Spokes
Spokes Sapim CX-Ray 4.25g/pcs (260 mm)
Spokes Titanium T-Force Aero 3.6g/pcs (260mm)
Spokes Titanium T-Max Aero 2.9g/pcs (260mm)

Nipples
Sapim Polyax (Secure Lock, 14mm) Alloy in color black, red, orange, gold, blue, green, purple, pink, silver and brass in color black.

Tubeless Ready Wheels

Advantage 1 - Lighter: Since no tubeless tape wrapping on the Tubeless Ready wheels, the weight of the wheel goes lighter than the weight of common wheel with tape wrapped;
Advantage 2 - Stronger: No holes drilling on rim bed (except valve holes) and the carbon fibers not being damaged, the rim bed would be kept integral and the strength increases;
Advantage 3 - Safe: Tubeless Ready wheels no risk of air leaking from the rim bed, the cycling stays safe and the journey could be longer than riding bike with common wheels.
Disadvantage: Needs professional maintenance in case of spoke breaking
Note: Tubeless Ready wheels could also be mounted with tubes.
What's in the Box
Carbon Wheelset (Front + Rear)
Complete Wheelset + Extra Spokes + Tubeless Kits + NEXTIE Cap
Documentation
Learn more
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?




