TUBULAR CASING

The perfectly round, pneumatic system known as a tubular adheres directly onto a tubular specific rim. Inside, the latex inner tube increases air permeability making it stronger against punctures, while maintaining high flexibility for minimal rolling resistance. The tread is hand-laminated over the casing, requiring no high temperatures during construction; a unique process reserved for premium tubulars. Due to the perfectly round profile (constant casing radius), cornering is more predictable and more confidence-inspiring than with clinchers, which do not maintain a constant casing radius due to the mechanical limitations of a hook and bead system. Shock absorption is also maximized. A tubular has a wide gluing surface on the rim, spreading forces and stresses more evenly on its structure than on a clincher tyre...this allows the tubular to absorb imperfections without deflecting or slowing down.

A Sticky Soft Compound - B Corespun 290 TPI - C Latex inner tube - D Presta Valve RVC E Specific MTB tubular rim.

FOLD CASING

Our Folding casings provide strong anti-pinch-flat protection and cut prevention, while delivering high performance in terms of the low rolling resistance and low overall weights, typical of our tyres. We’re able to achieve this result with a careful choice of proprietary polyamide threads and optimized positioning (cutting angles and layer coupling) to further stress Geax’s strengths. The casing is the main ingredient to get speed, reliability, grip, and overall suppleness.

Fold: A Nylon 120TPI - B Kevlar®
Rigid: A Nylon 26TPI - B Steel

UST CASING

All the properties and features of our Folding casings are present in the UST tubeless version, which also benefits from the butyl inner liner that provides air retention, allowing it to be used without inner tubes or even sealant!
The butyl liner on the Geax UST tyres coats the interior, not the exterior as do our main competitors. This location maximizes the reliability of the air-tightness over time, even through the typical rough usage of mountain biking.

A Nylon 120/60TPI - B Butyl layer - C UST Tubeless Talon

TNT XC CASING

TNT is now, more than ever, the benchmark in MTB casing technology. The presence of the UST Tubeless bead, but exclusion of the internal butyl layer makes for a lightweight and flexible casing unachievable with standard UST casings. Extra sidewall reinforcements enhance cut resistance and low speed compliance to deliver a “livelier” tyre. Our TNT tyres are lighter compared to a tubeless or to a tyre+tube combo, have lower rolling resistance due to a more flexible casing, higher reliability and increased cornering abilities due to the extra protection layer. The “NoTube” ability comes just by adding some liquid or foaming latex, which adds puncture prevention qualities as well.

A Nylon 120TPI - B Nylon 120TPI Sidewall Protection - C UST Tubeless Talon

TNT AM CASING

The natural progression of the All Mountain disciplines towards extreme performances pushed us to develop a specific casing targeting the exact needs of those new All Mountaineers: optimized durability and performance without too much weight carried over. Naturally, we started from our standard TNT technology, because as a base, the TNT features are nearly perfect for the project. With slight alterations, and the addition of a special APF Light butyl insert over the bead, we’ve constructed a tyre that delivers high pedaling properties typical of the XC tyres, but with the strength and reliability properties directly derived from our DH range. They’re the ultimate weapon for the modern AM rider.

A Nylon 120TPI - B Nylon 60TPI Sidewall Protection - C UST Tubeless Talon
D Butyl protection APF Light

DH 2-Ply CASING

Now days high performance downhill mountain biking requires attention to every detail and performance characteristic without compromise. It’s exactly this reason that our casing is built with two overlapping nylon plies. One is a highly optimized APF butyl insert which protects against pinch flats and gives stability to the shoulder. Each DH tire features a double or triple compound construction with specific formulations providing maximum grip, lower rebound, and the lowest rolling resistance possible.
All of this, coupled with our famous nylon casing quality, makes our DH tyres the fastest on the market. In a time when races are won by hundredths of a second, rolling resistance is key...

A 2-Ply Nylon 60TPI - B UST Steel Tubeless Talon - C APF Butyl protection