CZR i23 Rim

$569.95

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Product Description

Our flagship CZR i23 carbon rims minimize rotational weight so you can break away early and stay ahead of the pack. Fine-tuned carbon compliance makes you feel at one with the terrain while also reducing rider fatigue throughout long rides. Reinforced spoke holes increase reliability and allow grams to be shaved elsewhere, while subdued decals provide a svelte look that matches their scant weight. CZR i23 is the gravel rim of choice if you're looking for the best strength-to-weight ratio for big gravel days.

Usage: Adventure Road • Gravel • Cross-Country

Features

Technology

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FAQs

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Reinforced Spoke Beds

Additional carbon thickness around each spoke bed improves overall rim strength and durability while also minimizing weight in areas where less strength, and therefore material, is needed. CZR i23 rims feature 3mm of asymmetrical spoke offset to help equalize spoke tension on both sides of a built wheel and provide a stronger overall wheel.

23mm inner width

Gravel bikes with tires ranging from 36-45mm are best suited for the 23mm inner rim width of our CZR i23 rims. This strategically chosen width provides the most optimal air volume and sidewall support for the widest range of gravel tires without adding the unnecessary weight of a wider rim.

Weight-Optimized Layup

Designed to minimize weight while blending stiffness and compliance to maximize power transfer and increase comfort during the longest rides of the year. Carbon thickness was fine-tuned throughout the CZR i23 rim to reduce weight, improve radial compliance, reduce rider fatigue and increase overall comfort.

TCS Solid Strip

Durable nylon strip that lies between the rim and tubeless tape to prevent tubeless tape from pushing into the spoke holes and ensures a smooth interface between the tire and rim. The smooth surface makes it easier to mount a tire by preventing air from escaping around the bead at each indent during inflation. Solid Strip also protects the airtight system from puncture in the case of a broken spoke.

24mm section depth

CZR i23 rims feature a 24mm section depth to maximize energy transfer, reduce weight, improve vertical compliance, and reduce rider fatigue while a hooked bead also improves tire retention with high pressure adventure road and gravel tires.

product technology

TCS (Tubeless Compatible System) is our industry-leading tubeless rim/tire system designed to international ETRTO and ISO standards.

WTB carbon components are designed to provide a perfect blend of stiffness and compliance while also proving to be nearly indestructible.

Additional carbon at each spoke bed improves overall rim strength and durability while also minimizing weight in areas where less strength, and therefore material, is needed.

Spoke holes are drilled at an angle to match the natural spoke path between a rim and hub. Eliminates binding and lateral loading of the nipples to increase wheel durability.

Asymmetrically offset spoke holes create a stronger wheel by placing the holes more in line with the center of the hub and more evenly distributing spoke tension.

Sloped rim valley allows the bead of the tire to easily and smoothly move into place during installation and inflation.

Installed between the rim and tubeless tape to prevent tape from sagging at each spoke hole and make tire inflation easier while also preventing puncture from a broken spoke.

Internationally standardized to ensure rim and tire compatibility are as consistent and user-friendly as possible for both WTB’s products and those of our competitors.

SPECIFICATIONS: (Max spoke tension range: 110-120KgF)

Product	Wheel Size	Inner Width	*Weight	Spoke Holes / Offset	ERD	Tubeless Tape Width	Rim Size Designation	Max Rider Weight	Part Number
CZR i23 700c TCS 2.0 Rim, 24 hole, Black, PV	700 / 29"	23mm	331g	24-hole / 3mm	590	28mm	23-622	265 lbs	W020-0606
CZR i23 700c TCS 2.0 Rim, 28 hole, Black, PV	700 / 29"	23mm	345g	28-hole / 3mm	590	28mm	23-622	265 lbs	W020-0605

*CZR rim weights do not include the Solid Strip installed on each rim.

Why Choose CZR?

CZR carbon rims provide an unbeatable strength-to-weight ratio. Reinforced spoke beds, proven 4D angled spoke holes and an asymmetrical design provide all the necessary ingredients for an incredibly durable carbon rim. Add in the Solid Strip integration of our TCS system and you now have a system that is not only easier to set up tubeless, but also nearly impervious to losing pressure in the event of a broken spoke. We even did third-party testing against the competition, and found CZR i23 rims to be laterally stiffer and more impact resistant to those within the same weight category. To be precise, our CZR i23 rims proved to be 38% more impact resistant than their direct competition.

Ride With Confidence Guarantee

If you break our CZR carbon rim while riding, we'll send you one for free. No exceptions. Didn't have quite enough pressure in your tires for that surprise stretch of chunky gravel? Didn't see the softball-sized rock until it was a bit too late? Did your gravel ride accidentally end up on a downhill track? As long as you are the original owner and were riding your bike when it happened, we'll replace it for free. Your friends may judge for your poor line choice, but we won't. We also provide the option for us to rebuild the wheel and send it back to you with fresh spokes and nipples.

Read The FAQs

HOW DOES RIM WIDTH AFFECT TIRE VOLUME AND PROFILE?

Wider rims will cause a tire to also have a wider width, with more air volume within the tire and a flatter tire tread profile than designed for. As a general rule of thumb, a 2mm increase or decrease of inner rim width will result in a tire section width increase or decrease of 1mm. For example, our Nano 40 tire has a tire section width of 40mm on a 21mm inner rim width, however it will have a tire section width of 41mm on a 23mm inner rim width.

WHY DO CZR i23 RIMS HAVE A HOOKED BEAD WHILE CZR i30 ARE HOOKLESS?

CZR i23 rims feature a hooked bead because doing so provides a more dependable connection between the tire and rim when running a tire at the higher air pressures that are common with adventure road and gravel riding. CZR i30 rims feature a hookless bead because the smooth bead surface allows for more material to be used in an area when strength is incredibly important. Both CZR i23 and CZR i30 rims are compatible with any tires that comply with ETRTO standards.

WHICH TUBELESS VALVE LENGTH IS BEST FOR THESE RIMS?

All of our alloy rims work great with a 34mm valve stem. If you are using a deeper dish rim, like our CZR i23 rim, then we recommend the 46mm long valve stem. CZR i30 rims accept either length of valve.

ARE THERE TRICKS TO INSTALLING A TIRE ON AN ASYMMETRICAL RIM?

Asymmetrical rims feature a "short" and "long" side. It is helpful to always mount both sides of the tire onto the rim on the "short side" of the rim. The short side of the rim provides the shortest distance between the rim leg/bead and the valley of the rim. Once the first tire bead is completely on the rim, it can be pulled over the rubber portion of the valve and positioned at the deepest part of the rim valley. The other side of the tire can then be installed onto the rim with the least amount of resistance.

HOW DO YOU INSTALL TIRE INSERTS ON AN ASYMMETRICAL RIM?