Cyclocross World Champion for years. Whether a Pro or just a hard core rider Grifo is the tyre you need. Unbelievable grip with no rolling resistance compromise.
Details: Use Cyclocross Size 28&34; Width 33mm Weight 415 gr TPI 300 Bead Carcass Super Poly BAR 1.6
- 3PSI 28-87CHALLENGE TUBULARS HAND MADE: All tubular & open tubular produced by Challenge are special products. Machines are not able to produce them & the manual skill required in each step to obtain a good quality standard is very high. The casing is produced with the latest technical materials like Corespun &40;a cotton & polyester combination&41;. Corespun is a thread from which we obtain a very supple & strong casing with low weights. The casings have a high TPI count that can reach over 300 tpi. Our production process avoids any vulcanisation process to enable all materials to keep their suppleness & flexibility. The tread is slowly hand glued on the casing which is previously mounted & inflated on a rim. By using this method the tread is relaxed on the casing & does not suffer any tension when inflated. The result of this is a lower rolling resistance increase in comfort more precise handling of the bike & better grip. Hand made tubulars are well known by professionals & is this type of tire that is preferred for the long stage races. To give the best possible grip in curves Challenge uses the most updated materials to obtain flexibility suppleness & this results in absorption of irregular surfaces giving to the cyclist the best possible contact patch. The wheel avoids jumping & the tire will deform & absorb the irregularities acting in some way as a shock absorber. A special fabric is placed between the tread & casing to increase puncture resistance PPS &40; Puncture Protection System&41; technology. Comfort means reduction of harmful vibrations for the wrists & neck these vibrations will end causing inflammatory problems as a hard tire will transfer all the vibrations directly to the racer body.

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Multi Cyclocross Champion for years. Tread designed for speed on hard dry terrains.

Details: Use Cyclocross

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Multi Cyclocross Champion for years. Tread designed for speed on hard dry terrains.

Details: Use Cyclocross

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Latex inner tubes: Used in all high end tubular thanks to their low rolling resistance. Thinner & more flexible than butyl tubes. The use in open tubulars increases comfort & lowers rolling resistance. Latex is also more resistant to punctures. On the other hand it is a porous material therefore it requires daily inflation. ...

Latex inner tubes: Used in all high end tubular thanks to their low rolling resistance. Thinner & more flexible than butyl tubes. The use in open tubulars increases comfort & lowers rolling resistance. Latex is also more resistant to punctures. On the other hand it is a porous material therefore it requires daily inflation. ...

Deeper 33mm knobs for increased traction in deep mud. Speed & max. traction all in one.

Details: Use Cyclocross

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A 260TPI tubular for amateurs & pro alike. The best value performing tyre in our range of handmade tyres.

Details:

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The new MTB One tubular tyre. The special mud-free large tread to grip the worst mud & stand fast & agile at the same time. Jump from everywhere to everywhere. No brainer. Just race.

Details: Use MTB Size 26&34; or 29&34; Width 51&34; Weight 580 gr TPI 300 Bead Carcass Super Poly BAR 16-6 PSI 24-87 CHALLENGE TUBULARS HAND MADE: All tubular & open tubular produced by Challenge are special products. Machines are not able to produce them & the manual skill required in each step to obtain a good quality standard is very high. The casing is produced with the latest technical materials like Corespun &40;a cotton & polyester combination&41;. Corespun is a thread from which we obtain a very supple & strong casing with low weights. The casings have a high TPI count that can reach over 300 tpi. Our production process avoids any vulcanisation process to enable all materials to keep their suppleness & flexibility. The tread is slowly hand glued on the casing which is previously mounted & inflated on a rim. By using this method the tread is relaxed on the casing & does not suffer any tension when inflated. The result of this is a lower rolling resistance increase in comfort more precise handling of the bike & better grip. Hand made tubular are well known by professionals & is this type of tire that is preferred for the long stage races. To give the best possible grip in curves Challenge uses the most updated materials to obtain flexibility suppleness & this results in absorption of irregular surfaces giving to the cyclist the best possible contact patch. The wheel avoids jumping & the tire will deform & absorb the irregularities acting in some way as a shock absorber. A special fabric is placed between the tread & casing to increase puncture resistance PPS &40; Puncture Protection System&41; technology. Comfort means reduction of harmful vibrations for the wrists & neck these vibrations will end causing inflammatory problems as a hard tire will transfer all the vibrations directly to the racer body.

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A max. volume 27mm sect. tubular for fast but safe riding on worst condition roads. Delivers the best comfort you can achieve from a top performing racing tyre.

Details: Use Road racing Size 622/700&34; Width 27&34; Weight 260 gr TPI 260 Bead Aramid Carcass Super Poly BAR 6.5-8.5 PSI 94-123 CHALLENGE OPEN TUBULAR HAND MADE: Open tubular differ from traditional clinchers for the construction. The Tyre is produced just like a tubular & uses the same materials & production process. Instead of being sewed with an inner tube inside at the end of the process beads are made by folding the casing around Aramid fibers threads. For this reason an open tubular gives very similar ride feel of that of a tubular mainly if a latex inner tube is used. Mounting an open tubular on a wheel is the same as mounting a standard clincher but with the advantage of riding a much more comfortable & performing tyre.

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A max. volume 27mm sect. tubular for fast but safe riding on worste condition roads. Delivers the best comfort you can achieve from a top performing racing tyre.

Details: Use Road racing Size 28&34; Width 27&34; Weight 325 gr TPI 260 Bead Carcass Super Poly BAR 6.5-8.5 PSI 94-123 CHALLENGE TUBULARS HAND MADE: All tubular & open tubular produced by Challenge are special products. Machines are not able to produce them & the manual skill required in each step to obtain a good quality standard is very high. The casing is produced with the latest technical materials like Corespun &40;a cotton & polyester combination&41;. Corespun is a thread from which we obtain a very supple & strong casing with low weights. The casings have a high TPI count that can reach over 300 tpi. Our production process avoids any vulcanisation process to enable all materials to keep their suppleness & flexibility. The tread is slowly hand glued on the casing which is previously mounted & inflated on a rim. By using this method the tread is relaxed on the casing & does not suffer any tension when inflated. The result of this is a lower rolling resistance increase in comfort more precise handling of the bike & better grip. Hand made tubular are well known by professionals & is this type of tire that is preferred for the long stage races. To give the best possible grip in curves Challenge uses the most updated materials to obtain flexibility suppleness & this results in absorption of irregular surfaces giving to the cyclist the best possible contact patch. The wheel avoids jumping & the tire will deform & absorb the irregularities acting in some way as a shock absorber. A special fabric is placed between the tread & casing to increase puncture resistance PPS &40; Puncture Protection System&41; technology. Comfort means reduction of harmful vibrations for the wrists & neck these vibrations will end causing inflammatory problems as a hard tire will transfer all the vibrations directly to the racer body.

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