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Description
USA-Made Adventure Rim for Gravel and Trail
The Astral Outback Rim is designed for long-distance travel on dirt, whether you're tackling XC mountain bike epics, building an XL gravel rig, or exploring endless backcountry roads. With a 25mm internal width, this rim pairs perfectly with tires from 42mm gravel rubber up to 2.5-inch mountain bike tires, making it versatile enough for XC trails, city parks, and extended gravel adventures. The asymmetric spoke bed design improves spoke tension balance by up to 30%, which translates to enhanced stiffness, strength, and longevity compared to traditional symmetric rim designs.
Manufactured by Astral Cycling in Eugene, Oregon, the Outback rim represents American craftsmanship and quality control in every detail. The asymmetric design increases lateral stiffness by up to 20% while equalizing spoke forces and angles across the wheel, creating a more balanced and durable build. Drilled for external nipples and designed specifically for disc brakes, the Outback features Tubeless Easy compatibility that makes setup straightforward with a standard floor pump in most cases. Available in 700c/29", 650b/27.5", and 406/20" sizes, and offered in multiple hole counts from 28H to 40H, this rim adapts to builds ranging from lightweight gravel setups to heavy-duty touring and tandem applications.
Built for Adventure
- 25mm internal width designed for long-distance adventure on dirt roads and trails.
- Asymmetric (ASYM) rim design improves spoke tension balance by up to 30%.
- Asymmetric spoke bed increases lateral stiffness by 20% for better handling.
- Improved stiffness, strength, and longevity over standard symmetric rim designs.
- 25mm internal / 28mm external width accommodates tires from 42mm to 2.5 inches.
- Tubeless Easy compatible rim design sets up easily with a floor pump in most cases.
- Drilled for external nipples for easy truing and maintenance.
- Modern tubeless-ready design provides backcountry reliability.
- Disc brake specific design optimized for modern gravel and XC mountain bikes.
- Wide enough for 2.5" tires yet perfectly suited for 42mm+ gravel tires.
- Available in multiple hole counts: 28H, 32H, 36H, or 40H for custom builds.
- Designed and manufactured in Eugene, Oregon by Rolf Prima.
- Hand-built wheels available with custom hub and spoke specifications.
- Also available in polished silver finish for classic aesthetics.
UPC / Part Numbers
| Option | SKU | UPC |
|---|---|---|
| 20" / 28 / Black Cerakote | 210000027319 | — |
| 20" / 32 / Black Cerakote | 210000027321 | — |
| 20" / 36 / Black Cerakote | 210000027323 | — |
| 650b/27.5 / 28 / Black Cerakote | 210000027325 | — |
| 650b/27.5 / 28 / Polished Silver | 210000027326 | — |
| 650b/27.5 / 32 / Black Cerakote | 210000027327 | — |
| 650b/27.5 / 32 / Polished Silver | 210000027328 | — |
| 650b/27.5 / 36 / Black Cerakote | 210000027329 | — |
| 700c / 28 / Black Cerakote | 210000027331 | — |
| 700c / 28 / Polished Silver | 210000027332 | — |
| 700c / 32 / Black Cerakote | 210000027333 | — |
| 700c / 32 / Polished Silver | 210000027334 | — |
| 700c / 36 / Black Cerakote | 210000027335 | — |
