Description
Product Overview
The OEM‑GT Go Kart Jackshaft Kit is a complete drivetrain solution featuring a 5/8″ by 10″ precision‑machined jackshaft, two sealed bearings, an 8‑tooth and a 14‑tooth sprocket designed for 40/41 chains, a key, and two 5/8″ ID collars. Constructed from high‑strength steel, the components provide consistent torque transfer and long‑lasting durability for both competitive racing and recreational minibike use.
Usage
Ideal for go‑kart enthusiasts, minibike builders, and hobbyists seeking a reliable replacement or upgrade, this kit fits standard 40/41 chain setups. Install it on custom frames or stock chassis to improve acceleration and maintain precise engine timing during track days or off‑road adventures. 
Why Choose Us
OEM‑GT delivers factory‑grade quality with tight tolerances and rigorous testing, ensuring each bearing operates smoothly under high loads. Our kit includes all necessary hardware, eliminating the need for additional purchases, and the sealed bearings protect against dust and moisture, extending service life.
Key Features
- 5/8″ x 10″ hardened steel jackshaft for robust torque handling
- Precision sealed bearings reduce friction and maintenance
- Dual sprockets (8‑tooth and 14‑tooth) with built‑in key for 40/41 chain compatibility
- Complete hardware set includes key and two 5/8″ ID collars for easy installation
- Designed for both racing performance and everyday reliability
FAQ
What chain size does this kit support?
The included sprockets are sized for standard 40/41 chains with a 5/8″ inner diameter.
Are the bearings sealed?
Yes, both bearings are sealed to protect against dust, water, and debris, ensuring long‑term performance.
Can this kit be used on a minibike?
Absolutely. The dimensions and hardware are suitable for most minibike frames that use a 5/8″ jackshaft.
Is any special tooling required for installation?
Standard hand tools such as a wrench, screwdriver, and a bearing press are sufficient for installation.
What is the warranty period?
OEM‑GT offers a one‑year limited warranty covering manufacturing defects.







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