The TIME MX 4 [paid link] pedals are designed for riders who value efficiency, durability, and easy engagement in off-road and mixed-surface conditions. Built around TIME’s ATAC (Auto Tension Adjustment Concept) system, these pedals deliver excellent mud clearance and consistent float for comfort during long rides. However, understanding which shoes, cleats, and crank interfaces are compatible with the MX 4 [paid link] is essential to ensure proper performance and longevity. This guide breaks down every key compatibility detail, including what works, what fails, and how to avoid common setup mistakes that can affect your pedal’s functionality.
Understanding TIME MX 4 Pedal Design
The MX 4 pedals are built using a glass-filled composite body with a hollow steel axle. The dual-arch design provides stability underfoot while maintaining a low overall weight. The ATAC retention mechanism uses self-cleaning engagement bars, which automatically shed debris each time you clip in or out. Unlike other systems, TIME’s mechanism provides lateral (side-to-side) and angular (rotational) float, reducing stress on the rider’s knees and improving comfort across long distances.
MX 4 pedals use a springless retention system, meaning engagement is determined by the cleat’s interaction with the bar tension—not an adjustable screw. This makes compatibility and cleat setup accuracy especially important.
Cleat Compatibility: Getting It Right
The TIME MX 4 pedals are compatible exclusively with TIME ATAC cleats [paid link]. There are currently two cleat options that work perfectly:
- TIME ATAC Easy Cleats (Gold) – Offer 10° of release angle and require less force to unclip. Ideal for beginners or riders who frequently start and stop.
- TIME ATAC Standard Cleats (Black) – Provide a 13° or 17° release angle depending on the shoe’s orientation, giving more float and security for aggressive riders.
It’s essential not to mix ATAC cleats [paid link] with Xpresso or Xpro cleats, as these belong to TIME’s road pedal series. Using incompatible cleats can cause partial engagement or severe wear on the retention bars.
To confirm cleat compatibility:
- Check the cleat base pattern (ATAC cleats have a two-bolt SPD-style mount).
- Ensure the cleat recess in the shoe sole allows full engagement without interference.
- Replace worn cleats immediately; rounded cleat edges can lead to inconsistent release tension and premature bar wear.
Shoe Compatibility: Choosing the Right Pair
The MX 4 pedals use a 2-bolt SPD-style interface, which means they are compatible with a wide range of mountain bike, gravel, and touring shoes. However, not all shoes provide the same clearance or stiffness. Proper shoe choice can make a significant difference in both comfort and engagement consistency.
Recommended features for ideal compatibility:
- Recessed 2-bolt mounting holes to protect the cleat when walking.
- Moderately stiff soles to ensure efficient power transfer without sacrificing off-bike comfort.
- Adequate tread clearance around the cleat to prevent sole interference with the pedal’s retention bars.
Shoes from brands such as Shimano, Giro, Fizik, and Specialized generally work well, provided they use the SPD two-bolt pattern and have a mid-sole recess compatible with ATAC cleats.
Avoid road-specific three-bolt shoes or shoes with excessively deep tread near the cleat area, as they can obstruct engagement or lead to premature wear on the cleat’s engagement faces.
Crank and Spindle Compatibility
TIME MX 4 pedals feature a standard 9/16” x 20 TPI (threads per inch) steel spindle, making them compatible with nearly all modern cranksets. However, correct installation depth and spacing are critical for maintaining proper alignment and avoiding crank rub.
Key considerations:
- Apply grease to the spindle threads before installation to prevent seizing.
- Torque the pedals to approximately 35–40 Nm for secure fitment.
- If your crank arms are thick (common in some alloy and carbon models), consider using pedal washers to maintain optimal Q-factor and clearance.
TIME MX 4 pedals are compatible with both alloy and carbon crank arms, provided the thread interface is clean and undamaged. However, they are not suitable for cranks that use non-standard thread sizes, such as vintage French or BMX models.
Drivetrain and System Integration
Although pedals are often treated as isolated components, their behavior can be influenced by the drivetrain system. MX 4 pedals work optimally within 1x or 2x drivetrain setups commonly found on gravel and mountain bikes. Riders using narrow Q-factor cranks should verify that the MX 4’s platform width does not cause heel rub during pedaling. TIME’s generous float can compensate for slight misalignments, but mechanical interference should still be avoided.
For e-bike users, the MX 4 is fully compatible with mid-drive motor cranks that maintain standard 9/16” threading. The composite body’s resilience and steel axle durability make it well-suited for the higher torque typical of e-bikes.
Common Compatibility Pitfalls to Avoid
Several setup mistakes can compromise the MX 4’s performance or lead to premature wear:
- Using the Wrong Cleats – Installing Xpresso cleats or third-party SPD clones will not work with the ATAC mechanism and can damage the bars.
- Incorrect Cleat Position – If cleats are placed too far forward or backward, engagement can feel vague, and float may feel uneven.
- Crank Interference – Insufficient clearance between the pedal body and crank can restrict float movement.
- Over-Tightening Cleats – Excessive torque can distort the shoe’s sole plate, affecting cleat alignment and engagement quality.
- Mixing Old and New ATAC Cleats – Different generations may have slight dimension variations. Always replace both cleats as a pair.
By addressing these common issues during setup, you ensure smoother engagement, improved comfort, and consistent performance over time.
Optimizing MX 4 Compatibility for Better Performance
To get the most from your MX 4 pedals:
- Maintain a clean cleat interface—remove debris after muddy rides to prevent engagement difficulty.
- Check cleat wear every 1,000–1,500 km depending on riding conditions.
- Apply light grease to the pedal’s engagement bars occasionally to prevent corrosion.
- Use matching cleat float and shoe stiffness for your riding style—aggressive riders benefit from stiffer soles and standard cleats, while casual riders may prefer flexible shoes with easy cleats.
These small adjustments ensure the pedals remain predictable and efficient throughout their service life.
Final Verdict
The TIME MX 4 pedals offer outstanding versatility when properly matched with compatible cleats, shoes, and cranksets. Their ATAC system delivers a reliable and consistent feel across diverse conditions, but compatibility precision is key. Avoid mixing systems, verify your shoe’s sole clearance, and ensure correct crank fitment to unlock the pedal’s full potential. When set up correctly, the MX 4 delivers the classic TIME feel—efficient, comfortable, and virtually maintenance-free for years of riding.