WTB Proterra Light i27 29 Wheel

Proterra Light i27 are everyday wheels for the everyday trail bike.

Your bike that does all deserves a wheel that'll do the same. The 27mm inner rim width strikes a happy medium on the width spectrum and allows it to provide optimal air volume and casing profile on tyres in the 2.3-2.5" range. The open-cavity rim profile eliminates weight where it isn't needed while also allowing for a smoother ride. The responsive 6-pawl freehub provides 3.7 degrees of engagement and allows you to ratchet through techy climbs while also providing instant power as you pedal out of corners. Looking to go wide on your downcountry build? Even XC is going bigger.

Technologies

TCS 2.0 - Sealant-based tubeless system that improves upon the foundation of WTB's legendary TCS (Tubeless Compatible System). The integral component of TCS 2.0 is the Solid Strip, which makes tubeless more robust and dependable than ever before.

ISO/ETRTO Compliant - Internationally standardised tyre bead and rim sizing. This ensures that tim and tyre compatibility are as consistent and user-friendly as possible for both WTB's products and those of theircompetitors.

On Ramp - WTB's On-Ramp bead construction provides a cosistent fit between rim and tyre for easy installation and inflation. On-Ramp also allows riders to easily pop the tyre bead to the centre of the rim valley before the tyre removal.

4D - Spoke holes are drilled at an angle that matches the natural spoke pathfrom rim to hub. Doing so eliminates binding and lateral loading of the nipples, which increases stability and extends the lifespan of the wheel.

Sleeved - Rim ends are joined together using an extruded aluminium insert that matches the inner cavity of the rim. Both ends of the rim are hydraulically pressed over the tight tolerances of the insert and then further reinforced by industrial epoxy.

Solid Strip - Durable strip that sits against the rim and prevents tubeless tape from sagging at the spoke holes, which makes it easier to inflate a tyre and protects from puncture in the case of a broken spoke. Tubeless tape is then installed over the Solid Strip.

Features

27mm inner rim width with 32 spokes laced in a 3-cross pattern

6069 aluminum alloy rim. TCS 2.0 tubeless-ready

Sapim Secure Lock 14-gauge alloy nipples minimise rotational weight while double butted 2.0/1.8/2.0mm J-bend spokes make replacement a breeze

Tubeless tape, Solid Strip and black alloy valves are preinstalled,making the wheels ready for tubeless tyres the moment they arrive on your doorstep. The TCS 2.0 Solid Strip is a durable strip that lies beneath the tape, prevents it from sagging at the spoke holes, makes it easier to mount a tyre and protects from puncture in the case of a broken spoke

6-bolt rotor mounts

Top-tier EZO sealed bearings

Rear wheels are available with Shimano Microspline or SRAM XDR driver bodies

Specifications