The Challenge Grifo Pro Handmade Clincher Tire features an extremely high thread count and puncture protection under the tread to create the optimal race gravel tire.
Features:
- All condition race tire, excellent grip in both wet or dry conditions
- Pro: supple, 300 TPI SuperPoly casing with a layer of puncture protection underneath the tread, optimized for 30-90 psi
- ENVE SES rims are not compatible with this tire









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