Handmade 320TPI Corespun Cotton Casing: for that ultra-supple feel Challenge fans swear by.
SMARTsoft Rubber Compound: fine-tuned with help from world-class ‘cross athletes, providing dialed-in cornering grip and confident braking traction.
Tread: the same Flandrien tread as the tubular model; Aggressive, widely spaced knobs designed to bite into the top layer of mud, clearing that mud when the time comes, all the while keeping rolling resistance low (for a wet-weather tread).
Hookless Rim Compatibility: built to stay within UCI width rules when paired with rims up to 23mm (actually 25mm on our test) internal width.
PPS Puncture Protection Layer: tucked under the tread for peace of mind during hard-fought laps.
Challenge Flandrien TE Handmade TLR – Tech Specs
Size: 700x33c
Casing: Handmade 320TPI corespun cotton
Compound: SMARTsoft natural rubber
Type: Tubeless Ready (hookless compatible)
Puncture Protection: PPS layer
Color: Red label
UCI Legal: Yes – they measure 33.31 on our caliper and pass our UCI test block with Zipp 303 with a 25mm internal, and hookless bead
full carbon, tapered steerer fork with internal dynamo routing and crown light mount
fully integrated internal cable routing
wide 85.5mm T47 threaded bottom bracket shell with internal bearings “for greater stiffness, durability, and tire clearance“
titanium-coated 1.5″ Token IS52 headset bearings
UDH and routing for electronic or mechanical 1x drivetrains
real 700c x 50mm tire clearance
27.2mm round seatpost with 31.8 external seatpost clamp
12mm thru-axles and flat mount (140) brakes
3-bolt cage mounts on downtube, seattube, and each fork leg
2-bolt toptube bag and cage mount under the downtube
full coverage fender and rack mounts
120kg max system weight (rider, bike & gear)
Black Star, Green Thumb & Shimmy Raw.
Shimano GRX mechanical builds, which will ship in September with alloy DT wheels, 45mm Pirelli Cinturato Adventure tires, a Deda Superzero Gravel cockpit, and a carbon seatpost
Advanced EVA Padding: optimized to absorb shocks and vibrations, ensuring a stable and comfortable ride in all conditions.
Reinforced Carbon Shell and AISI 304 or Carbon Rail: extreme lightness combined with uncompromised durability, for superior performance and long-lasting reliability
Extra-long rail: allows the maximum saddle’s adjustment range, always ensuring a perfect position on the bike.
"Eagle Beak" Tip: designed to reduce pressure on the perineal area, optimizing blood flow and providing ergonomic support throughout the entire ride.
Wide-Open Central Channel: eliminates pressure from sensitive areas and promotes natural blood flow.
Rear Support Areas: shaped to match the sit bones, ensuring natural and comfortable support in the saddle.
