32-Inch MTB Carbon Rims for XC & All-Mountain – 30/35mm Internal Width

The 32-inch mountain bike wheel is an emerging format developed for riders and bike builders exploring greater rollover capability, stability and momentum beyond the conventional 29er platform.

ORNAN’s 32 inch MTB carbon rim range includes seven configurations for XC and all-mountain applications. Riders, wheel builders and bicycle brands can choose between 30mm and 35mm internal widths, 25mm and 30mm rim depths, hooked and hookless bead profiles, and symmetric or 3mm asymmetric designs.

All models are tubeless-ready and designed for disc-brake wheel builds. Custom complete wheels with steel or carbon spokes are also available.

The UCI has confirmed that 32-inch wheels are permitted in cross-country mountain bike competition(check here). 32 inches is by far the largest mountain bike wheel diameter, 64 millimeters larger than the BSD (Bead Seat Diameter) of 29 inches, which directly brings several performance improvements. 

But why consider a 32-inch mountain bike wheel？

- Shallower Approach Angle
With a comparable tire setup, a larger wheel diameter creates a shallower approach angle when meeting roots, rocks and trail obstacles. This can help the wheel roll over uneven surfaces more smoothly.

- Greater Momentum and Stability
The larger rotating diameter can help the wheel maintain momentum and track more steadily across rough or open terrain. This may benefit XC marathon and endurance-oriented riding where maintaining speed is important.

- Larger Tire Contact Area
Depending on tire size and pressure, the larger wheel format can create a longer contact patch, supporting traction and stability on loose or uneven surfaces.
- More Proportional Fit for Tall Riders
For some tall riders, a 32-inch wheel can allow a custom frame to achieve more visually and functionally proportional geometry than a conventional 29er platform. But actual performance will also depend on frame geometry, total wheel weight, tire construction, tire pressure, wheel build, riding terrain and rider position. A larger wheel is not automatically faster in every application.

FEATURES:

- Hybrid construction of Toray T700 & T800 &T1000

- Extremely high scrolling efficiency

- Excellent passability and stability

- More traction in rough corners

- Smoother ride in rocky terrain

- Ability to run lower tire pressure

- Reduced rider fatigue

- Symmetric and 3mm asymmetric rim profiles

- Compatible for 2.0"-2.75" tire (tubeless ready)

- Hook and hookless options

- 2 years’ quality warranty

- Custom steel(28/32/36H available) or carbon spokes(only F/R 24H) wheel builds available

32-Inch MTB Rim SPECIFICATIONS

Model	M30-25C-AM	M35-30CH-AM	M35-30C-AM	M30-25C-XC	MU30-25C-XC	M35-30CH-XC	M35-30C-XC
Sectional Drawing
Material	T700 & T800	T700 & T800	T700 & T800	T800 & T1000	T1100	T800 & T1000	T800 & T1000
Offset	3mm	NO	NO	3mm	3mm	NO	NO
Use	AM	AM	AM	XC	XC	XC	XC
Type	Hookless	Hooked	Hookless	Hookless	Hookless	Hooked	Hookless
Tubeless	Ready	Ready	Ready	Ready	Ready	Ready	Ready
Internal/External Width	30mm/37mm	35mm/41.5mm	35mm/41.5mm	30mm/37mm	30mm/37mm	35mm/41.5mm	35mm/41.5mm
Depth	25mm	30mm	30mm	25mm	25mm	30mm	30mm
ERD(Include Nipple)	658mm	648mm	648mm	658mm	658mm	648mm	648mm
Weight	440+/-15g	530+/-15g	530+/-15g	410+/-15g	370+/-15g	480+/-15g	480+/-15g
Weight Limit	140kg	140kg	140kg	120kg	100kg	120kg	120kg
Spoke Tension	≤130kgf	≤130kgf	≤130kgf	≤130kgf	≤130kgf	≤130kgf	≤130kgf
Max Tire Pressure	35psi/2.41bar	35psi/2.41bar	35psi/2.41bar	35psi/2.41bar	35psi/2.41bar	35psi/2.41bar	35psi/2.41bar
Tire Recommended	2.0" ~ 2.75”	2.3" ~ 2.75”	2.3" ~ 2.75”	2.0" ~ 2.75”	2.0" ~ 2.75”	2.3" ~ 2.75”	2.3" ~ 2.75”