Description
Challenge's origins lie in the former Italian high quality racing tire brand Cremen. When Cremen was acquired by Pirelli and stopped manufacturing racing tires, its distributor, Brevo, bought the rights to produce tires, along with the manufacturing plant and workers, and took over the tire The company took over the manufacturing of tires. The company has always offered high quality racing tires that are different from mass-produced vulcanized tires.
The Grifo is the most versatile all-around tire and has the same traditional tread pattern as the CX's history.
The center and side knobs provide light rolling, high grip in high-speed corners, and excellent performance on all surfaces: wet, dry, soft, rocky, hard, and root-covered. When in doubt about tire selection, we recommend using this tirE
The tire has a 120 TPI casing, the highest level available in nylon. Although the suppleness and firmness of the casing is not as good as the handmade series, the durability and cost performance of synthetic rubber are the key points.
SPEC
Size : 700c x 33mm
Type : Tubeless compatible
Casing : Nylon
TPI : 120
PSI : 40-75
- Orders are shipped within 1–2 business days after payment is confirmed. Orders placed by 10:00 AM are generally shipped the same day.
- Messenger delivery is available within Nagoya City only (excluding complete bikes and framesets).
- We ship every day from Monday through Sunday, except on temporary closure days.
- Shipping destinations: throughout Japan and worldwide.
- Shipment may be delayed depending on credit card processing. If you would like to request a delivery date or time, please add a note in your cart.
- All orders are shipped from Circles.
- For damage or loss during transit, please contact the carrier.
Complete Bike Shipping within Japan
- A shipping fee of ¥9,900 (tax included) applies to complete bikes. Additional charges may apply for Okinawa and remote islands.
- After purchase, we perform a final inspection before shipping. Please allow 1–2 weeks in some cases.
- For packing, some parts may be removed. We strongly recommend having the bike reassembled and checked by your local bicycle shop before riding.
- We will contact you by email with delivery details.
- Products are also sold in-store, so availability may change before the order is finalized.
Frameset Shipping within Japan
- Flat-rate shipping within Japan: ¥5,500 (tax included). Additional charges may apply for Okinawa and remote islands.
- Shipping rates for OMNIUM framesets and complete bikes differ.
- We will contact you by email with delivery details.
- Facing and tapping preparation for framesets purchased from Circles is available at no additional charge. Details will be provided after purchase.
- Headset and bottom bracket installation are also available for an additional labor fee. Please contact us if required.
Custom & Stock Wheel Shipping within Japan
- A shipping fee of ¥2,000 (tax included) applies. Additional charges may apply for Okinawa and remote islands.
- Stock wheels undergo a final inspection by a mechanic before shipping. Please allow approximately 3 business days for dispatch.
For international orders, shipping costs vary by destination. Please check the amount shown at checkout.



