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360.CHCO00603
In stock £49.99 Buy
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: 622/700
Width: 33mm
Weight: 340 gr
TPI 300
Bead: Aramid
Carcass Super Poly
BAR 2 - 6
PSI 28-87

CHALLENGE TUBULARS HAND MADE:

All tubular and open tubular produced by Challenge are special products. Machines are not able to produce them and 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 (a cotton and polyester combination). Corespun is a thread from which we obtain a very supple and 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 and flexibility.

The tread is slowly hand glued on the casing which is previously mounted and inflated on a rim. By using this method the tread is relaxed on the casing and 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 and better grip. Hand made tubulars are well known by professionals and 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 and this results in absorption of irregular surfaces giving to the cyclist the best possible contact patch. The wheel avoids jumping and the tire will deform and absorb the irregularities acting in some way as a shock absorber. A special fabric is placed between the tread and casing to increase puncture resistance PPS (Puncture Protection System) technology.

Comfort means reduction of harmful vibrations for the wrists and neck, these vibrations, will end causing inflammatory problems, as a hard tire will transfer all the vibrations directly to the racer body.

If you have never tried a hand made product, go to a local shop and ask to see one. Touch the product and look at its construction and the side walls. You will immediately notice the difference.

Delivery Information

Hargroves Cycles offer Free Delivery for all orders over £9 with in Mainland UK (orders below £9 will be charged £1.99)

Current disptach time of UK Bike orders is 5-7 days.
In Stock Clothing, Parts and Accessories are usually delivered within 2-4 working days, often sooner.

Bikes and Bulky items are sent via TNT Courier and smaller items are sent via Royal Mail 2nd Class Post.

Items over £50 are sent with Royal Mail 1st Class track able service which is emailed to the customer on the day of dispatch.
For full delivery details please see our Delivery Page

International Delivery

Hargroves Cycles delivery all across Europe. Goods are shipped from the UK and are subject to import duties where applicable

For further delivery, pricing and restriction information please view our International Shipping Page

Returns Information

We will happily exchange or refund any item purchased at Hargroves Cycles within 365 days, except gift vouchers and personalized products, except where faulty.

Returned goods must be unused and supplied with their original packaging, unless faulty.

For full details on our Returns procedure please visit out Returns Section.

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You're reviewing: Challenge Grifo 33 Open Cyclocross Tyre

The Challenge story begins in 1985 when Italian company Brewo Italia begins selling and servicing Italian products including Clement tyres. In 1990 Vittoria and Clement move to Thailand to cut costs. In 1998 the Thailand factory closes but the following year the owner of Brewo Italia buys and re-constructs the factory so he can continue supplying tyres.

In 2003 after failing to reach an agreement with Pirelli for use of the Clement trademark, the owner and his son create their own brand named Challenge to produce and sell tubulars and open tubulars. In 2005 the original molds for the famous Grifo, Criterium, Paris-Roubaix, Crono and Pista are joined by new innovative treads like Grifo XS and Strada.

In 2006 Challenge creates an innovative process to produce the worlds first seamless latex inner tube and Erwin Vervecken wins the Cyclocross World Championships on Challenge. In 2008 Challenge release the Fango tread and 2009 sees them expand the open tubular range with the Forte, Triathlon and Fango treads made.

By 2014 Challenge have introduced the Chicane cyclocross tyre and now makes the 320TPI Corespun Cotton casing Team Edition Grifo and Limus tyres available to the public.

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Fareham
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To avoid disappointment please contact the store before visiting to confirm current stock or to arrange to transfer items to desired store. Bikes require additional checks and this may affect estimated dispatch times.

  • Challenge Grifo 33 Open Cyclocross Tyre