This hand-made tubular cross tire features a versatile tread design that has proven its merits in World Championships. Great traction in muddy conditions without sacrificing speed. Black tread with natural sidewall. 300 TPI Super Poly casing. Latex tube. Anti-puncture protection system.
The Challenge Grifo Tubular is available in 700c x 33mm (33-622 ISO). 420 grams. Black/Natural.
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: 340 grams
Wheel Size: 700C/29" (ISO 622)
Tire Type: Tubular
Threads Per Inch: 300
RimSize: 622 mm
Width: 32 mm
ISO (ETRTO) Size: 32-622 mm
Min Pressure: 30 psi
Max Pressure: 90 psi
Made in: Thailand
700c x 33mm - Black/Tan
Mfg PartNum: 11706
700c x 38mm - Black/Tan
Mfg PartNum: 11711
Before reviewing the specific tread pattern, Challenge makes high quality tubies for cross. The pro edition (what is being reviewed) and team edition (white sidewall, more expensive) are both very well built. They are round, mount easily, and overall have no base tape issues. They have a generally good lifespan and are a good value at the price. The suppleness is highly subjective to critique but you are not going to lose a race because of the suppleness of these tires )
The primary issue with the Grifo is the tread pattern, it is no as good as the MXP or FMB SSC. The MXP has better traction and sheds mud faster. I have had 3 unexplained slips on the rear wheel this season during dry conditions that never happened when using the MXP. For a true all around tread the MXP is king. If you are wanting to stay with Challenge the baby limus is a better option as you get a bit more bite with better mud shedding abilities.
Tip use aquaseal on the sidewalls (1-2 coats) before mounting, it will make a significant difference in the lifespan of the tire.
Love these. Sticky compound, tough treads - that really instill confidence in most conditions - minus extreme. You'll be flying in the morning dew races when the corners are a bit slick, and loving the sticky compound in the afternoon when the course turns to dry dust.
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