The Challenge Grifo 33 Open tire combines a tried and true tread pattern with the versatility and ease of use of a clincher that's perfect for racing and training. At 300 threads per inch, this tire is remarkably supple for a clincher. Low profile knobs are great on fast grass courses and hard packed gravel/dirt, but aggressive enough for mud. If you could only have one clincher for the entire season, the Challenge Grifo would be a great choice.
Note: This tire is somewhat confusingly labeled as an 'Open Tubular.' It fits standard clincher rims and requires a tube.
B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.
The product weight specified is an approximate weight based on the manufacturer's specifications (if available) or our measurement of one or two examples. For most products, the weight will typically vary by 5% to 10%.
Weight: 355 grams | |
Threads Per Inch: 320 | |
Tire Type: Clincher-Folding | |
Mfg PartNum: 00603 | |
Wheel Size: 700C/29" (ISO 622) | |
Tire Width: 33mm (1.3in) | |
RimSize: 622 mm | |
ISO (ETRTO) Size: 33-622 mm | |
Min Pressure: 30 PSI | |
Max Pressure: 90 PSI | |
TPI: 300 TPI | |
Made in: Thailand | |
These tires are excellent. Mounting these tires will have you breaking tire levers and questioning your existence. But when they're mounted and working, these tires are hard to beat. Surprising durability compared to how soft and grippy they feel. Tan sidewalls will discolor permanently after a few muddy or dirty races, but that's fine. Would recommend, but get help with mounting.
