Kimber Ultra 18lb Recoil Spring Assembly – .45 ACP / .40 S&W

Reliable Cycling. Reduced Recoil. Factory-Grade Performance, Keep your Kimber running like new with the Kimber Ultra 18lb Recoil Spring Assembly, engineered specifically for .45 ACP and .40 S&W Ultra Carry and Compact models. Whether you’re performing routine maintenance or solving feeding and ejection issues, this factory-spec spring assembly ensures smooth cycling, reliable chambering, and reduced felt recoil.

This drop-in replacement comes fully assembled—no need to piece it together—making it the perfect solution for fast upgrades or refreshes of high-round-count pistols.

Kimber 1911 Ultra Outer Recoil Spring Set, 18lb., 45 ACP/.40, Set of 3. These Kimber constructed outer recoil springs are manufactured for the 1911 Ultra pistol models chambered in .45 ACP and .40 S&W. This 18 lb. spring set is a direct OEM replacement for all of the Ultra 3″ models and is this set works great as replacement pieces or for a workshop tune up to boost pistol statistics.

Complete drop-in replacement recoil spring assembly for Ultra models in 45ACP or 40 S&W.

Package contains 1 Ultra Recoil Spring Assembly.This replacement Ultra Recoil Spring Assembly is a factory original from Kimber.

We are a Kimber Authorized Dealer, and can help you with any parts that you might need for Kimber.

Key Features

• ✅ 18lb Recoil Spring Tension
  Ideal for standard pressure and defensive loads in .45 ACP and .40 S&W.

• ✅ Factory Fit for Kimber Ultra & Compact Models
  Designed for compact Kimber 1911 platforms with 3-inch barrels, including the Ultra Carry, Ultra CDP, and Compact Custom.

• ✅ Complete, Pre-Assembled Unit
  Includes recoil spring, guide rod, and plug—ready to install in minutes.

• ✅ Improved Functionality & Longevity
  Helps eliminate malfunctions caused by worn or weakened springs.

• ✅ Durable Steel Construction
  Built to withstand repeated cycling and high-volume shooting.

Specifications

• Brand: Kimber

• Model Compatibility: Kimber Ultra / Compact Models (3” barrel)

• Caliber: .45 ACP / .40 S&W

• Spring Weight: 18 lbs

• Includes: Recoil Spring, Guide Rod, Plug (Fully Assembled)

• Material: Steel

• Installation: Drop-in, no gunsmithing required

️ Ideal For:

• Routine Maintenance / Recoil Spring Replacement

• Restoring Factory-Like Cycling Performance

• ⚙️ Enhanced Reliability with Carry or Range Loads

Also Available :

Wilson Disconnector, Bullet Proof