Project Description
Zipp NSW Type 29 inch Asymmetric Undulating Carbon Rim for XC
- Material: Toray T700 & T800
Size: 29”/29er
Intended Use: Cross Country
Bead Type: Clincher
Tubeless Ready: Yes
Weave: UD or 3K
- Hole: Front 28H, Rear 28H
- Depth: 22/25mm (Please see the data below)
- ERD: 589mm
- Rim Weight: Standard 360+/-15g, Flyweight 320+/-15g
Max Cyclist Weight: Standard 120kg/ 265lbs, Flyweight 100kg/ 221lbs
Spoke Tension: ≤130kgf
- Max Tire Pressure (with 25C): 40psi / 2.75bar
Recommended Tire Width: 2.2″ ~ 2.7”
Zipp NSW Type XC Rims Specs

Zipp NSW Type XC Rims: Standard weight and Flyweight you can choose from
Model | Depth | Outer Width | ERD | Rim Weight | Max Cyclist Weight | Spoke Tension | Max Tire Pressure | Recommended Tire Width |
---|---|---|---|---|---|---|---|---|
UDL925 Standard | 22/25mm | 35mm | 589mm | 360+/-15g | 120kg/ 265lbs | ≤130kgf | 40psi / 2.75bar | 2.2″ ~ 2.7” |
UDL925F Flyweight | 22/25mm | 35mm | 589mm | 320+/-15g | 100kg/ 221lbs | ≤130kgf | 40psi / 2.75bar | 2.2″ ~ 2.7” |
Zipp NSW Type XC Rims Technology
- Hookless Rim Technology : Hookless rim technology provides a more consistent carbon fiber structure at the rim wall. This enhances the durability of the rim and increases its impact resistance. It also provides better grip and sidewall support when cornering.
- Smooth Inner Wall: A specific, thinner, high-pressure air bladder is used to control the smoothness of the inner wall, and the inner wall air bladder can be extracted clean at one time without residue, which not only effectively improves the tightness of the carbon fiber yarn, but also makes the spoke cap and the spoke hole more closely combined.
- One-piece Layup Design: An one-piece layup design is used to increase fiber continuity and reduce the number of overlapping seams for better rim dynamic balance.
- Burp Free Technology: When installing the tire, the raised portion reinforces the bead, making it harder to drive into the center channel.
- Asymmetric Rim Profile: The asymmetric rim profile design significantly balances the spoke tension between the drive side and the non-drive side, resulting in a stronger wheel structure that lasts longer.

- Undulating Rim: Top aerodynamics and crosswind stability performance with undulating 22/25mm rim depth.
- Angle Drilling Technology: All spoke hole angles are tailored to the geometry of the hub. This allows the nipple to be pulled in a straight line with the spokes to reduce stress.
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