Challenge Grifo Handmade TLR PRO Black and Red Tire 700 x 33 bicycle valve extender This is the PRO casing

This is the PRO casing option

U23 or Elite National Championships then you CAN RUN THESE

It is AMAZING for most all racing you may do

It is not a true mud tire

Everyone should be running it

Challenge Grifo Handmade TLR PRO Black and Red Tire 700 x 33 bicycle valve extender This is the PRO casingRace Tuned. Comfort Calibrated. The Grifo TLR Pro Team Edition isn't here to mess around. It's a Tubeless (TLR) tire but uses a sealed Corespun Cotton casing giving it a more supply 320 TPI over the regular TLR version. The Grifo is absolutely one of the best "mid" tires around for racing cyclocross. It excels in racing courses that have a mix of terrains such as grass, slightly loose dirt, rock, etc. It performs well on grassy off camber sections. It