Challenge Gravel Grinder Pro 700x33C gravel cover, TLR, kevlar, Black/Tan
Challenge Gravel Grinder PRO
A fast sample taken from cyclocross tires in a tubeless design, ideal for gravel/cyclocross.
Gravel Grinder PRO is a cover directly intended for gravel wheels, which in combination with latex-free sealant enables tubeless use.
The sample based on the Chicane cyclocross wheels is characterized by an excellent combination of low rolling resistance and at the same time security in turns thanks to the side protrusions.
- width 33/36/40 mm
- ETRTO 33-622 / 36-622 /40-622
- kevlar foot,
- 260 TPI
- recommended pressure 1.7 - 3 bar
- SuperPoly Corazza Armor material
- PPS Ganzo + 2x defects
- use only for hooked rims
- weight 355/470 g
- French marking 700x33 / 700x36 / 700x40
- black color with brown sides
- possibility of tubeless use with latex-free sealant
| Colour | black |
| Tubeless | Yes |
| Material | kevlar |
| product ID | 150384 |
PSI - indicates the pressure to which the manufacturer recommends inflating the tire. 1 atmosphere = 14.7 PSI
TPI (EPI) - the density of the shell's skeleton fibres. The higher the TPI value, the more flexible and flexible the tire will be.
Kevlar tire - foot made of Kevlar fibres. The cover can be folded, so it is more practical when moving or storing. It is characterized by a lower weight compared to wire casings and a higher resistance to puncture.
Wire tire - bead made of wire. The shell is inflexible, it is heavier than the Kevlar one.
Overview of tire sizes and markings
| Size chart | ETRTO | Dimension in inches | French label |
|---|---|---|---|
| 28" | 18-622 | 28 x 3/4 | 700 x 18C |
| 19-622 | 700 x 19C | ||
| 20-622 | 28 x 3/4 | 700 x 20C | |
| 22-622 | 28 x 7/8 | 700 x 22C | |
| 23-622 | 28 x 7/8 | 700 x 23C | |
| 25-622 | 28 x 1.00, 1 1/16 | 700 x 25C | |
| 28-622 | 28 x 1.20 | 700 x 28C | |
| 30-622 | 28 x 1 5/8 x 1 1/8 | 700 x 30C | |
| 32-622 | 28 x 15/8 x 11/4 | 700 x 32C 700C COURSE | |
| 35-622 | 28 x 15/8 x 13/8 | 700 x 35C | |
| 37-622 | 28 x 1 5/8 x 1 3/8 | 700 x 35C | |
| 40-622 | 28 x 1.50 28 x 1 5/8 x 1 1/2 | 700 x 38C | |
| 42-622 | 28 x 1.60 | 700 x 40C | |
| 44-622 | 28 x 1.625 | 700 x 42C | |
| 47-622 | 28 x 1.75 | 700 x 45C | |
| 50-622 | 28 x 1.90 28 x 2.00 | ||
| 60-622 | 28 x 2.35 | ||
| 32-635 | 28 x 1 1/2 x 1 1/8 | 770 x 28B 700 x 28B 770B COURSE | |
| 40-635 | 28 x 1 1/2 28 x 1 1/2 x 1 3/8 | 700 x 38B 700 x 35B 700 Standard 700B Standard | |
| 44-635 | 28 x 15/8 x 11/2 | 700 x 40/42B | |
| 28-642 | 28 x 1 3/8 x 1 1/8 | 700 x 28A | |
| 37-642 | 28 x 1 3/8 | 700 x 35A |
| Tire width in mm | Wheel rim in mm | |||||||||
| 13C | 15C | 17C | 19C | 21C | 23C | 25C | 27C | 29C | ||
| 18 | X | |||||||||
| 20 | X | |||||||||
| 23 | X | X | ||||||||
| 25 | X | X | X | |||||||
| 28 | X | X | X | X | ||||||
| 32 | X | X | X | X | ||||||
| 35 | X | X | X | |||||||
| 37 | X | X | X | X | ||||||
| 40 | X | X | X | X | ||||||
| 42 | X | X | X | X | X | |||||
| 44 | X | X | X | X | X | |||||
| 47 | X | X | X | X | X | X | ||||
| 50 | X | X | X | X | X | X | ||||
| 52 | X | X | X | X | X | X | X | |||
| 54 | X | X | X | X | X | X | ||||
| 57 | X | X | X | X | X | X | ||||
| 60 | X | X | X | X | X | X | ||||
| 62 | X | X | X | X | X | X |
savings Challenge Smart Tubeless tubeless sealant, 250 ml
14.39 €
savings
RRP 20.99 €
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