40mm PMI Double Lock Rear Wheel Hub with Dual Patterns for Secure Racing

• Double lock mechanism with four pinch bolts for ultimate axle grip in demanding conditions.
• Dual patterns support both USA and metric wheels via removable index ring.
• Full 5/16-24 hardware kit included for out-of-box readiness.

Double the security, single the hassle—this 40mm PMI rear hub redefines reliability for serious kart builders. The four-bolt clamping system distributes force evenly, eliminating the slip that plagues lesser designs during hard launches or sudden direction changes. Versatile patterning means you're never wheel-locked at international meets; just pop off the ring for metric fitment.

Performance Mfg's attention to detail shows in the hub's balanced machining, which aids in smoother rotation and less energy waste. For endurance racers, this translates to cooler-running rears and extended component life. Track engineers praise its role in fine-tuning offset, where precise locking prevents camber shifts that upset balance.

Installation is a breeze, but the real win is in race-day confidence—know your rear end won't budge, so you can attack corners with full commitment. It organizes axle work efficiently, as the double lock reduces the need for constant re-torquing. Compatible with tethers or keys via set screw hole (not included), it fits safety regs effortlessly.

Elevate from standard to superior; this hub's engineering helps shave fractions off laps through unwavering traction. Ideal for 40mm setups in LO206 or similar classes. SKU: PM-38DL-40. Lock in victory.

Frequently Asked Questions

Q: How do I switch between USA and metric wheel patterns?

A: This hub features a removable index ring. Simply remove the ring to transition the hub from a USA pattern to a metric pattern, allowing you to use a wider variety of wheel brands without needing to replace the entire hub.

Q: Why is the double lock mechanism better than a standard hub?

A: The double lock system utilizes four pinch bolts to distribute clamping force evenly across the axle. This prevents the hub from slipping during hard launches or aggressive cornering, ensuring your rear end remains stable and consistent throughout the race.

Q: Does this hub come with the necessary hardware?

A: Yes, this 40mm PMI rear hub includes a full 5/16-24 hardware kit, making it ready for installation right out of the box.

Q: Can I use this hub with a keyway or tether system?

A: Yes, the hub includes a set screw hole that is compatible with standard tethers or keys, helping you meet safety regulations for your specific racing class.

Q: Will this hub fit my 40mm axle?

A: Yes, this hub is precision-machined specifically for 40mm axle setups, making it an ideal upgrade for LO206 and similar karting classes.

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