Form Mountain Bike Cleat Extender Plates – SPD

Between 12mm and 22mm. You set the exact amount by sliding the plate fore or aft on the four standard bolt holes in the shoe before you tighten it down. Tighten the four screws in an alternating sequence to between 5 and 6Nm.

Any SPD style two-hole cleat, including Shimano, Look and Time. Look X-Track needs alternate screws, and Crank Bros needs a Crank Bros cleat spacer. Time ATAC carries a caveat, so contact us before you order if that is what you ride.

They fit most non-casual MTB and gravel shoes. The kit includes 1.5mm and 2.5mm riser kits for shoes with a raised rubber section behind the cleat aperture, which is the usual reason a flat plate will not sit down properly. Measure that step first and pick the riser kit that matches it.

Yes. Each plate carries a walkable element, the same idea as our V2 MTB shim, and the curved shape keeps the plate in close contact with the sole instead of standing proud of it.

They stop the plate rotating on the sole. Two threaded holes at the rear of the plate take them, and you wind them in until they bite into the rubber. Most shoes do not strictly need them, but FORM recommends using them.

No. These are for two-hole SPD style cleats on MTB and gravel shoes. For three-hole Look, SPD-SL and Time road cleats use the FORM 3-hole cleat extender plates, and for Wahoo Speedplay use the FORM Speedplay cleat extender plates.

We know that stack height is important, but we couldn’t make the steel plate less than 2.5mm without the potential to bend, and we can’t make the rubber element less than 1.5mm, similar to the MTB shim. Essentially, we were constrained to a minimum added stack of 4mm. Stackers are essential for shoes with a raised rubber section at the rear, and most users should be able to get by with the 1.5mm version.

Depending on the setup, the increased stack height is as follows:

• Base setup without risers = 4mm. This is 2.5mm for the steel plate, 1.5mm for the rubber element
• Riser 1.5 setup = 5.5mm
• Riser 2.5 = 6.5mm

Will the MTB extender plate work on the new Shimano S-Phyre RX710 / RX910 with the pontoon supports?

The unexpected answer is yes, though only partially. The MTB extender plate will bolt onto the S-Phyre RX series shoes (910 & 710), due to the fact that the shoe still has the 4x threaded bolt holes. So the extender plate can be fitted and secured as per normal, but  ith Shimano’s pontoon discarded.

The one issue is the walkable element which, on a normal MTB shoe, is supported by the rubber treads on the sides. With the S-Phyre there are no treads on the side to support the walkable element. So fine for riding but not walking / running with the bike.

By special request Form can make a custom version with the vacant area under the walkable elements filled in. This is the only mod necessary to make this work.  Contact us if you want to explore this.

If you are using a cleat adapter plate to move the cleat back, then this effectively moves your foot further forward on the pedal.  Moving your foot forward on the pedal may be better for foot stability and pressure distribution, but the unintended and largely unavoidable consequence is an increase in toe overlap with the front wheel.

Many cyclists are concerned about toe overlap, but it is rarely an actual problem in regular riding.  Where toe overlap does a problem is doing low speed tight turns to navigate an obstacle, or gravel riding on very technical terrain that may also require a lot of front wheel maneuvering. Skilled riders will prevent shoe to tire conflict and tumbles by making sure the leading foot is opposite the turning wheel.