Bayword Holley Main Jet Kit 70-79 (1/4-32 UNF) – 20 Jets in Case

Sharper carburetor tuning with a complete jet kit

Bayword presents the Holley Main Jet Kit, a precise assortment designed for street and race applications. This set includes twenty jets in two per size, covering 70 through 79. Each jet uses a 1/4"-32 UNF thread, the standard for Holley and Holley-style carburetors. The collection arrives in a sturdy plastic storage case that keeps the parts organized and easy to locate when you’re tuning.

Durable metal construction and a clean, machined finish give these jets a reliable feel during installation. The included storage container features labeled compartments, helping you quickly identify the right size during quick swaps or methodical adjustments. This is a practical option for enthusiasts who value organization and consistent parts handling in a busy workshop or on a pit lane bench.

What you get and how it helps

• 20 jets in total, with two pieces for each size from 70 to 79, offering broad tuning options
• 1/4"-32 UNF threads for compatibility with Holley-family carburetors and similar configurations
• Plastic storage case with individual slots to keep each jet protected and easy to reach
• Clear reference notes on the product page help you compare sizes quickly when planning adjustments

Use this kit to explore how jet size changes affect fuel delivery under different conditions. In everyday driving, you may find subtler shifts in idle or mid-range response as air, temperature, and engine load vary. In tracking or competitive setups, the assortment gives you practical options to test fuel balance and throttle response across a spectrum of scenarios. While outcomes depend on many factors, a thoughtful jet swap can reveal useful insights into how your carburetor behaves under diverse loads.

Compatibility and notes

• Designed to fit Holley carburetors and Holley-style units, including AED, Barry Grant, Quick Fuel, Demon, Avenger, and other brands with a 1/4"-32 UNF thread
• Two jets per size ensure you have immediate backup for testing and tuning sessions
• If you need sizes beyond 70–79, you can request a custom quantity or size; we’ll guide availability and shipping

Overall, this kit offers a practical, organized way to expand your tuning toolkit. The combination of multiple jet sizes, reliable threading, and a durable storage case makes it a solid choice for enthusiasts who want flexibility without clutter.