1.250" MINI Sprocket Hub for Compact Kart Drivetrains

Compact power, big results: The PMI Mini Sprocket Hub 1.250" anchors your sprocket firmly, minimizing slop for crisp, responsive acceleration in tight kart configurations. Sized for mini systems, it's a lightweight essential that keeps weight low while maximizing torque delivery.

• Bore precision-machined to 1.250" for exact fits.
• High-strength alloy withstands mini-class rigors.
• Keyed design prevents rotation under load.

Installation is straightforward, aiding organized builds where every gram counts toward faster times. This hub's reliability lets you push harder without driveline worries.

Perfect for youth or spec classes, it supports setups that prioritize agility and speed.

SKU: PM-15M

Frequently Asked Questions

Q: Is this hub compatible with standard 1.25" axles?

A: Yes, this hub is precision-machined for a 1.250" bore, making it the perfect fit for standard 1.25" kart axles used in many youth and spec classes.

Q: Does the hub include the keyway for installation?

A: This hub features a keyed design to prevent rotation under load. Please ensure your axle key is in good condition before installation to maintain a secure, slop-free fit.

Q: Why should I choose a mini sprocket hub over a standard size?

A: The mini sprocket hub is designed for compact drivetrains where weight reduction and space are critical. It helps keep your rotating mass low, which can improve acceleration and responsiveness in tight kart configurations.

Q: How do I ensure the hub is properly aligned?

A: Proper alignment is essential for chain longevity. We recommend using a laser alignment tool during installation to ensure the sprocket is perfectly parallel to your engine drive gear, reducing friction and wear.

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