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Merlin Cycles£84.95Visit shop Challenge Black/White Grifo Handmade Team Edition Tubular Cx Tyre - 28” - / / 28" / Tubular / 33Mm
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The Challenge Grifo Handmade Team Edition is designed for competitive cyclocross racers seeking a versatile, high-performance tyre that handles diverse terrain from loose dirt to muddy paths. Its primary benefit is the combination of superior traction and a supple, race-ready feel provided by its advanced cotton casing, though users should note that the fragile nature of high-end cotton tubulars requires more careful maintenance and installation compared to standard clincher tyres.
| Release Year | 2019 |
|---|---|
| Model Part Number | CH-11850 |
| Brand | Challenge |
The recommended range is 22-35psi, depending on rider weight and the severity of the course terrain.
No, this is a tubular tyre and requires a dedicated tubular rim designed for gluing.
Latex tubes are porous and will lose air faster than butyl; you should pump the tyres to your desired pressure before every ride.
It is treated with a sealant to be moisture-resistant, but it should not be stored in standing water or damp conditions for long periods.
Yes, it includes a seamless latex inner tube stitched inside the casing.
Yes, using a compatible latex-based sealant is recommended to provide extra protection against small punctures.
Check your tyre pressure; it may be too low for your body weight, causing the casing to roll on the rim.
The tyre should be pre-stretched. Mount it on a rim without glue for 24 hours to allow the casing to reach its natural shape.
Inspect for contact with the frame or brake pads; if the casing is exposed, apply a thin layer of specialized sidewall sealant.
As a tubular tyre, the Challenge Grifo must be glued or taped to a compatible tubular-specific rim. Proper preparation is essential: ensure the rim bed is clean and free of old glue residue. It is highly recommended to pre-stretch the tyre onto the rim without glue for 24 hours before the actual installation to ensure an easier fit.
After riding in wet conditions, wipe down the sidewalls with a dry cloth and ensure no mud or grit remains on the casing. Because the cotton is sealed, it is moisture-resistant but not waterproof; storing the bike in a cool, dry place away from direct sunlight will prevent the rubber compounds from degrading prematurely.
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