--- product_id: 516851970 title: "Michigan Motorsports Dual Spring Kit .660\" Titanium Retainers for LS Engines" brand: "btr" price: "€ 1.21" currency: EUR in_stock: false reviews_count: 3 url: https://www.desertcart.hr/products/516851970-michigan-motorsports-dual-spring-kit-660-titanium-retainers-for-ls store_origin: HR region: Croatia --- # Precise spring specs & coil bind Lightweight titanium retainers 660" lift dual spring kit Michigan Motorsports Dual Spring Kit .660" Titanium Retainers for LS Engines **Brand:** btr **Price:** € 1.21 **Availability:** ❌ Out of Stock ## Summary > ⚡ Elevate your LS engine game with titanium precision! ## Quick Answers - **What is this?** Michigan Motorsports Dual Spring Kit .660" Titanium Retainers for LS Engines by btr - **How much does it cost?** € 1.21 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/516851970-michigan-motorsports-dual-spring-kit-660-titanium-retainers-for-ls) ## Best For - btr enthusiasts ## Why This Product - Trusted btr brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug-and-Play Upgrade:** Drop-in fit for all 15° LS heads including LS1 through LSA series - • **Race-Ready Durability:** Lightweight titanium retainers reduce valvetrain mass for faster response - • **Complete Installation Kit:** Includes polished springs, locators, locks, and seals for seamless assembly - • **Precision Engineered Specs:** Springs rated up to 400 lbs with exact coil bind for reliable operation - • **Maximize LS Engine Performance:** 660" lift dual springs engineered for aggressive cam upgrades ## Overview Michigan Motorsports' Dual Spring Kit features .660" lift dual springs with lightweight titanium retainers, designed specifically for LS engines using stock rocker arms. Engineered for aftermarket camshaft upgrades, this drop-in kit fits all 15° LS heads and delivers precise spring rates up to 400 lbs, ensuring enhanced valvetrain performance and durability. ## Description Brian Tooley Racing BTR Dual Spring Kit .660" LS1 LS2 LS3 LQ4 Titanium Retainers This very popular Spring Kit is highly recommended when upgrading to a aftermarket Camshaft Includes light weight Titanium Retainers .660" Lift dual spring kit for LS engines using stock rocker arms. Included dual polished springs, matching Titanium Retainers, locators for stock guides, locks and seals. Spring specs are 155 lbs @ 1.780", 380 lbs @ 1.180", 400 lbs @ 1.130, coil bind @ 1.070" This is a drop in spring kit for all 15 degree LS heads including LS1 LS2 LS3 LS4 LS6 L76 L92 L99 LQ4 LQ9 L33 LSA. Review: Perfect product for a upgrade to an Engine build... Review: Just as I expected from BTR ## Features - Brian Tooley Racing BTR Dual Spring Kit .660" LS1 LS2 LS3 LQ4 Titanium Retainers - This very popular Spring Kit is highly recommended when upgrading to a aftermarket Camshaft - Includes light weight Titanium Retainers - .660" Lift dual spring kit for LS engines using stock rocker arms. Included dual polished springs, matching Titanium Retainers, locators for stock guides, locks and seals. - Spring specs are 155 lbs @ 1.780", 380 lbs @ 1.180", 400 lbs @ 1.130, coil bind @ 1.070" This is a drop in spring kit for all 15 degree LS heads including LS1 LS2 LS3 LS4 LS6 L76 L92 L99 LQ4 LQ9 L33 LSA. ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | Michigan Motorsports | | Brand | BTR | | Model | BTR | | Product Dimensions | 30.99 x 9.65 x 7.62 cm; 1.99 kg | | Manufacturer reference | BTR SK001/T/0560/BB | | Manufacturer part number | BTR SK001/T/0560/BB | | Position | Front | | Item Weight | 1.99 kg | ## Product Details - **Brand:** BTR - **Auto part position:** Front - **Material:** Titanium - **Included components:** Installation Hardware - **Manufacturer:** Michigan Motorsports ## Images ![Michigan Motorsports Dual Spring Kit .660" Titanium Retainers for LS Engines - Image 1](https://m.media-amazon.com/images/I/71GiRmM54ML.jpg) ![Michigan Motorsports Dual Spring Kit .660" Titanium Retainers for LS Engines - Image 2](https://m.media-amazon.com/images/I/71qhuZdBbvL.jpg) ![Michigan Motorsports Dual Spring Kit .660" Titanium Retainers for LS Engines - Image 3](https://m.media-amazon.com/images/I/71j6SxaVgXL.jpg) ![Michigan Motorsports Dual Spring Kit .660" Titanium Retainers for LS Engines - Image 4](https://m.media-amazon.com/images/I/61TswzWNRkL.jpg) ![Michigan Motorsports Dual Spring Kit .660" Titanium Retainers for LS Engines - Image 5](https://m.media-amazon.com/images/I/6113Q2-Z12L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by J***O on 5 March 2024* ### ⭐⭐⭐⭐⭐ Review *by K***D on 19 July 2022* Perfect product for a upgrade to an Engine build... ### ⭐⭐⭐⭐⭐ Review *by S***A on 12 December 2019* Just as I expected from BTR ## Frequently Bought Together - Brian Tooley Racing BTR LS Dual Valve Spring Kit with Titanium Retainers .660" Lift Fits -LS1 LS2 LS3 LS4 LS6 L76 L92 L99 LQ4 LQ9 L33 LSA - BTR Brian Tooley Racing LS 7.400" Chromoly Pushrods | 5/16" Diameter, .080" Wall | Fits 4.8 5.3 6.0 LS1 LS2 LS6 LS3 L76 L92 L99 LQ4 LQ9 L33 LSA | High-Performance Upgrade --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/516851970-michigan-motorsports-dual-spring-kit-660-titanium-retainers-for-ls](https://www.desertcart.hr/products/516851970-michigan-motorsports-dual-spring-kit-660-titanium-retainers-for-ls) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-06-08*