The Large and X-Large models are full 29. The Small and Medium versions feature mixed “mullet” wheelsizing—29 up front and 27.5 rear. 29-inch wheels give the new Sender CFR better momentum carry through rocks and roots, and a higher overall speed.

“Mullet” wheelsize is slang for mixed wheelsizing—a 29-inch front wheel paired with a smaller 27.5-inch rear wheel. A smaller rear wheel is ideal for some riders in certain situations—for example, on steeper courses where shorter riders, in particular, might want more clearance between themselves and the rear tire. With the mullet wheelsize shorter riders get the advantage of the big wheel up front—when the trail gets nasty and techinical, you just fly right over the rough stuff—while also getting the extra clearance out back.

No. Although the two bolt holes on the shock link might suggest that you can run any wheelsize on the Sender CFR, this is not the case. Fitting a rear wheel that is larger or smaller than what comes “stock” on your size of Sender CFR will negatively impact the geometry and handling of the bike.

However, if you normally fit a size Large and really wish you could ride the mullet version of this bike, you’re in luck. You can choose a size Medium Sender CFR and run it in the long chainstay and reach settings. Voila, you now are riding a “mullet” Sender CFR that is technically a size Medium, yet fits like a size Large.

The Sender CFR will come with two upper headset cups—a standard cup that offers no reach adjustment and a second, reach-adjust cup. Swapping these headset cups is easy and only takes a few minutes.

We designed the new Sender CFR’s kinematics to work well with both air and coil-sprung rear shocks. It’s your choice.

Not at this time.