Ignition Kit – Extreme Engineering – Classic Spur – 5 Piece

Extreme Engineering Classic Spur Ignition Kit (5‑Piece)

Traditional Spur Styling with Match‑Grade Fire‑Control Performance

Upgrade your 1911 or 2011 with the Extreme Engineering Classic Spur Ignition Kit, a five‑piece fire‑control system that blends timeless spur‑hammer styling with modern competition performance. At the same time, this kit delivers fast lock time, excellent durability, and long‑term geometry stability. As a result, serious shooters gain classic aesthetics without sacrificing speed, consistency, or reliability.

Although many factory ignition systems emphasize appearance, Extreme Engineering prioritizes performance first. Consequently, the Classic Spur Kit focuses on strength, precision, and repeatability. Because of this approach, your trigger pull remains clean, predictable, and stable through thousands of rounds.

Why the Classic Spur Kit Outperforms Factory Fire‑Control Parts

Most factory ignition components rely on basic carbon steel with shallow surface heat treatment. Unfortunately, this approach limits service life and accelerates wear on critical engagement surfaces. Over time, shooters often experience inconsistent trigger pulls, gritty or unstable breaks, geometry wear, slower lock time, and shifting trigger weights.

In contrast, Extreme Engineering manufactures the Classic Spur Kit from a premium aerospace‑grade alloy originally developed for rocket booster engine applications. Therefore, the components deliver superior impact resistance, outstanding wear properties, and long‑term geometry retention. Additionally, Extreme Engineering heat treats the hammer to 50–54 Rockwell C, creating an ideal balance between surface hardness and core strength. As a result, the system maintains reliable performance under demanding competition use.

Classic Spur Design with Modern Lock‑Time Speed

Right out of the box, the Classic Spur Ignition Kit delivers a clean four‑pound trigger pull. Moreover, with minor sear spring adjustment, you can achieve a consistent three‑pound competition pull. Because the components retain their geometry, the trigger pull stays stable and resists weight drift over time.

At the same time, the optimized hammer mass preserves fast lock time and responsive trigger feel. Therefore, you enjoy traditional spur control without giving up modern shooting performance. Furthermore, Extreme Engineering manufactures every component in the USA and backs each part with a lifetime warranty against breakage. Compared to imported ignition kits with inconsistent steel and heat treatment, this system offers dramatically higher durability and long‑term value.

The Thunder Mountain Custom Advantage

Only Thunder Mountain Custom includes a custom Standard Sear Spring with this ignition kit. Because this spring is precision‑tuned, it delivers a cleaner break, supports lighter pull weights, and improves overall consistency. As a result, the Classic Spur Kit outperforms standard ignition kits that omit this critical upgrade.

What’s Included in the Classic Spur Ignition Kit

Classic Spur Chamfered Ultra‑Light Hammer

This hammer weighs only 0.7 oz, which helps deliver one of the fastest lock times available. Additionally, Extreme Engineering heat treats it to 50–54 Rockwell C and chamfers it to reduce stress and improve durability. Consequently, the hammer improves trigger response and shot‑to‑shot split times. It fits Colt, Kimber, Springfield, STI, SV, and Para pistols.

Tactical Precision Sear

Extreme Engineering machines this sear from the same aerospace‑grade alloy used in its premium hammers. It heat treats the sear to 44–46 Rockwell C, which supports light trigger pull stability, prevents follow‑down, and preserves long‑term geometry. Therefore, it performs reliably in match pistols nationwide.

National Match Disconnector

This lightweight disconnector improves reset consistency while supporting high‑speed cycling reliability. As a result, it enhances double‑tap performance and maintains smooth operation during rapid fire.

Thunder Mountain Custom Standard Sear Spring

This exclusive sear spring delivers a crisp break, stable light pull weights, and a smooth trigger feel. Because it outperforms standard factory sear springs, it significantly improves overall trigger consistency.

Wolff Precision Mainspring

Choose a 15 lb, 17 lb, or 19 lb mainspring to balance trigger feel and ignition reliability. Wolff Precision GunSprings provide consistent performance and long service life, making them an industry standard.

Compatibility

The Classic Spur Ignition Kit fits 1911 and 2011 platforms from Springfield, Colt, Kimber, STI, SV, Para, and Springfield Prodigy, as well as custom 1911 and 2011 builds.

Important Fitment Notes

Some pistols require thumb safety fitting. Additionally, certain setups require a new thumb safety for proper sear engagement. Therefore, a qualified pistol smith should perform final fitting to ensure optimal performance.

Built for the Serious 1911 and 2011 Owner

If you are building or tuning a match‑ready pistol, the Extreme Engineering Classic Spur Ignition Kit delivers faster lock time, a cleaner break, lighter and more stable pull weights, and long‑term consistency. Because it combines aerospace‑grade materials, precision machining, a lifetime warranty, and an exclusive Thunder Mountain Custom sear spring, this kit provides elite‑level fire‑control performance that holds up under hard use.