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- Carries 1 bike
- Full aluminum one piece design
- Fits 15 and 20 mm axles
- Includes aluminum adapters to fit 15 and 20 mm axles
1 bike fork roof mount carrier max load capacity 45 lbs per bike. The Spire adapter lets you mount a bike with a 15- or 20-mm thru-axle fork to a fork-mount rack with a 9-mm quick-release skewer. Aluminum adapter fits swagman and most other brands of fork-mount racks. Includes 2 aluminum tubes for both thru-axle sizes.