FORM Speedplay Extender Plates – Advanced Cleat Adjustment Adapters
FORM Speedplay Extender Plates are a professional biomechanical solution that extends the adjustability of the Speedplay (Wahoo) system beyond the manufacturer's standard limits. Modern bike fitting practices have evolved, particularly in ultra-distance cycling, to emphasize improved foot positioning on the pedal.
Product Philosophy: Moving the cleats rearward reduces the foot's leverage, stabilizing it over the pedal. This reduces strain on the ankle and calf muscles, which is extremely beneficial in endurance cycling, and also eliminates the problem of "hot foot" by moving the pressure point away from the pedal axis.
SPEEDPLAY ADAPTERS COMPARISON: R20 vs ML9 vs MLR618
| Model | Longitudinal adjustment (Aft) | Lateral adjustment (Medial/Lateral) | Main goal |
|---|---|---|---|
| R20 | 20 mm | Standard | Extreme retraction (Mid-foot), calf relief. |
| ML9 | Standard | 9 mm | Foot width (Q-Factor), knee pain. |
| MLR618 | 18 mm | 6 mm | Hybrid: significant pullback + lateral correction. |
POSITIVE EFFECTS AND BENEFITS
- Better power transfer: More direct energy transfer thanks to optimal foot placement.
- Knee Pain Reduction: Precise stance width adjustment eliminates medial or lateral knee pain.
- Ultra-distance comfort: Relieving the load on smaller muscles in favor of more powerful groups (thighs, glutes).
- Eliminate rubbing: Laterally adjustable models allow you to move the shoe away from the crank or frame.
MODEL CHARACTERISTICS
R20 (Rearward): The best choice for riders who require a mid-foot position. If your shoe cleats are too forward, the R20 will restore proper leverage.
ML9 (Stance Width): Ideal for riders with a wider or narrower pelvis who require a 9mm Q-Factor adjustment to improve biomechanics.
MLR618 (Versatility): FORM's most versatile model. It features three sets of holes (standard, rear, and rear-side), offering hybrid 18mm/6mm adjustability.
TECHNICAL SPECIFICATIONS
| Material | High-quality aluminum |
| Compatibility | Wahoo Speedplay Zero / Aero / Walkable |
| Kit Contents | Two plates, Torx screw set, mini Torx wrench |
Technical Note: FORM adapters are designed to work with the supplied Torx screws. Using other screws may compromise the stability of the connection. Some configurations may require slight trimming of the blue Speedplay wedges. For full installation instructions, see the FORM Speedplay Installation Guide .
ABOUT THE FORM BIKEFITTING BRAND
British brand FORM, based in Sheffield, is a leader in biomechanical innovation. Their products are designed for cyclists seeking solutions that go beyond market standards, combining precision craftsmanship with real physiological benefits.