--- product_id: 63010953 title: "SuperSprings SSR-313-54 Pair of Rear SumoSprings with Mounting Hardware" price: "¥116612" currency: JPY in_stock: true reviews_count: 13 url: https://www.desertcart.jp/products/63010953-supersprings-ssr-313-54-pair-of-rear-sumosprings-with-mounting store_origin: JP region: Japan --- # 2800 lbs load-leveling capacity Maintenance-free one-piece design Handmade in USA with lifetime warranty SuperSprings SSR-313-54 Pair of Rear SumoSprings with Mounting Hardware **Price:** ¥116612 **Availability:** ✅ In Stock ## Summary > 🚀 Elevate your RAM’s rear suspension game—ride stronger, smoother, smarter! ## Quick Answers - **What is this?** SuperSprings SSR-313-54 Pair of Rear SumoSprings with Mounting Hardware - **How much does it cost?** ¥116612 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/63010953-supersprings-ssr-313-54-pair-of-rear-sumosprings-with-mounting) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Stability:** Progressive load support compresses with weight, reducing rear sag and enhancing balanced handling for a smoother drive. - • **Drive with Confidence:** High-grade micro-cellular urethane reduces body roll and softens harsh rebounds, perfect for urban streets or rugged terrain. - • **Maximize Your Payload:** Custom-engineered for RAM ProMaster 1500/2500/3500 2WD, supports up to 2,800 lbs load-leveling to keep your ride steady under pressure. - • **Zero Maintenance, All Gain:** One-piece urethane design eliminates leaks and compressors—reliable suspension support without the hassle. - • **Proudly American, Built to Last:** Handmade in the USA and backed by a Limited Lifetime Warranty—your trusted partner for every journey. ## Overview The SuperSprings SSR-313-54 Rear SumoSprings are a premium suspension upgrade designed specifically for 2014-2027 RAM ProMaster 1500/2500/3500 2WD models. Offering up to 2,800 lbs of load-leveling capacity, these maintenance-free, one-piece micro-cellular urethane springs improve ride height, reduce rear sag, and enhance driver control by minimizing body roll and harsh rebounds. Handmade in the USA and backed by a Limited Lifetime Warranty, they deliver durable, progressive support for both daily driving and heavy-duty use. ## Description SumoSprings are a patented suspension product designed to enhance load carrying ability, stabilize sway, and improve overall driver control and ride comfort. They are maintenance free, do not leak air, and do not require airlines or compressors. SumoSprings are manufactured in a variety of heights, diameters and densities to support multiple front and rear applications. They are manufactured from proprietary closed micro-cellular urethane providing a smooth and progressive spring rate with superior damping properties. Review: Helpful for stability and smooth ride - These were easier to install than the front Sumo Springs and they do seem to improve overall handling and ride. I installed them shortly after getting my camper van because virtually everyone who had tried them said they made a significant improvement. They seem to be working fine three years later. Review: Much improved handling - Bought these and the front ones as well for our 2022 Dodge ram Promaster 3500 travel van. Easy in install, and the ride difference is huge. Wife thought it wasn't a smart purchase till we test drove it with the new springs. You will not be sorry you bought these. ## Features - Vehicle Compatibility: Custom-engineered for 2014-2027 RAM ProMaster 1500/2500/3500 2WD ; fits rear applications and adds up to 2,800 lbs of load-leveling capacity at 50% compression - Progressive Load Support: SumoSprings compress under increasing weight to reduce rear-end sag, improve ride height, and maintain balanced handling - Maintenance-Free Technology: Features a one-piece design that requires no air lines or compressors for a reliable alternative to traditional air systems that will not leak or rupture over time - Enhanced Driver Control: Manufactured from high-grade micro-cellular urethane with a progressive spring rate to help reduce body roll during cornering and soften harsh rebounds on uneven terrain - Proudly Made in the USA: Handmade in the United States and backed by a Limited Lifetime Warranty, ensuring long-term reliability and performance for your off-road or daily driving adventures ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B073RK8CHW | | Best Sellers Rank | #255,336 in Automotive ( See Top 100 in Automotive ) #103 in Automotive Replacement Suspension Coil Springs | | Brand | SuperSprings | | Customer Reviews | 4.8 4.8 out of 5 stars (380) | | Date First Available | July 6, 2017 | | Exterior | Painted | | Item Weight | 2.45 pounds | | Item model number | SSR-313-54 | | Manufacturer | Supersprings International, Inc. | | Manufacturer Part Number | SSR-313-54 | | Model | SSR-313-54 | | Position | Rear | | Product Dimensions | 14 x 9 x 5 inches | | Special Features | Compress up to 80% of original height with full memory rebound, Improves overall driver control and ride comfort, Made from patented micro-cellular urethane, One-piece unit attached on one side used as a replacement/upgrade to factory bump stops, progressive spring rate with superior damping properties | ## Images ![SuperSprings SSR-313-54 Pair of Rear SumoSprings with Mounting Hardware - Image 1](https://m.media-amazon.com/images/I/61wxAHo5dWL.jpg) ![SuperSprings SSR-313-54 Pair of Rear SumoSprings with Mounting Hardware - Image 2](https://m.media-amazon.com/images/I/71ufGPWLZzL.jpg) ![SuperSprings SSR-313-54 Pair of Rear SumoSprings with Mounting Hardware - Image 3](https://m.media-amazon.com/images/I/81guR6WdBgL.jpg) ![SuperSprings SSR-313-54 Pair of Rear SumoSprings with Mounting Hardware - Image 4](https://m.media-amazon.com/images/I/710sQ0EjZ4L.jpg) ![SuperSprings SSR-313-54 Pair of Rear SumoSprings with Mounting Hardware - Image 5](https://m.media-amazon.com/images/I/81-87TnyIVL.jpg) ## Questions & Answers **Q: Which sumo springs recommended for the front on ram promaster 2500?** A: CSS-1195 fits RAM ProMaster 2500 **Q: For quantity should i order 1 or 2 ?** A: 2 are included in each order **Q: Will these work on my 2013 ram 1500 crew cab** A: The SSR-313-54 SumoSprings are for the Ram ProMaster Vans not for the Ram 1500 truck. Look at most any website that sells SumoSprings and they with identify which product to use on your 2013 Ram/Dodge 1500 truck. **Q: Has anyone experimented using 1 vs 2 spacers? I seem to be getting more bounce with 2 spacers used. The Sumos have definitely smoothed out the ride/co** A: Use 2 spacers for a better experience ## Customer Reviews ### ⭐⭐⭐⭐⭐ Helpful for stability and smooth ride *by S***H on December 27, 2024* These were easier to install than the front Sumo Springs and they do seem to improve overall handling and ride. I installed them shortly after getting my camper van because virtually everyone who had tried them said they made a significant improvement. They seem to be working fine three years later. ### ⭐⭐⭐⭐⭐ Much improved handling *by X***R on May 1, 2024* Bought these and the front ones as well for our 2022 Dodge ram Promaster 3500 travel van. Easy in install, and the ride difference is huge. Wife thought it wasn't a smart purchase till we test drove it with the new springs. You will not be sorry you bought these. ### ⭐⭐⭐⭐⭐ Shocks *by M***E on June 30, 2026* Perfect fit and stability ## Frequently Bought Together - SuperSprings SSR-313-54 | SumoSprings Rear for Dodge RAM ProMaster 1500|2500|3500, yellow - SuperSprings CSS-1195 | Coil SumoSprings for various applications | 1.95 inch inner wall height, Black - Bilstein B6 2014+ Dodge Ram Promaster 1500/2500/3500 Rear Monotube Strut Assembly (24-245500) --- ## 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.jp/products/63010953-supersprings-ssr-313-54-pair-of-rear-sumosprings-with-mounting](https://www.desertcart.jp/products/63010953-supersprings-ssr-313-54-pair-of-rear-sumosprings-with-mounting) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-09*