--- product_id: 1900094 title: "Evolution Series-4 LS Heavy Duty Bicycle U Lock Bike Lock with Transit FlexFrame Bracket (4-Inch x 11.5-Inch)" brand: "kryptonite" price: "25308 som" currency: KGS in_stock: true reviews_count: 13 category: "Kryptonite" url: https://www.desertcart.kg/products/1900094-evolution-series-4-ls-heavy-duty-bicycle-u-lock-bike store_origin: KG region: Kyrgyzstan --- # 14mm hardened MAX-PERFORMANCE steel shackle Transit FlexFrame bracket for versatile carrying Double deadbolt design for twist attack resistance Evolution Series-4 LS Heavy Duty Bicycle U Lock Bike Lock with Transit FlexFrame Bracket (4-Inch x 11.5-Inch) **Brand:** kryptonite **Price:** 25308 som **Availability:** βœ… In Stock ## Summary > πŸ” Lock in your peace of mind β€” because your bike deserves Kryptonite-level protection. ## Quick Answers - **What is this?** Evolution Series-4 LS Heavy Duty Bicycle U Lock Bike Lock with Transit FlexFrame Bracket (4-Inch x 11.5-Inch) by kryptonite - **How much does it cost?** 25308 som with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/1900094-evolution-series-4-ls-heavy-duty-bicycle-u-lock-bike) ## Best For - kryptonite enthusiasts ## Why This Product - Trusted kryptonite brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **LED-Illuminated Key:** Includes 3 stainless steel keys, one with a high-intensity LED for night-time convenience and quick access. - β€’ **Twist-Proof Security:** Hardened double deadbolt design locks down your bike against even the craftiest twist attacks. - β€’ **Patented Oval Crossbar:** Stronger than typical round tubes, engineered for maximum cut resistance and durability. - β€’ **Smart Transit FlexFrame:** Innovative mounting bracket lets you carry your lock hands-free and hassle-free on any ride. - β€’ **Unmatched Steel Strength:** 14mm MAX-PERFORMANCE steel shackle resists bolt cutters and leverage attacks, keeping your ride invincible. ## Overview The Kryptonite Evolution Series-4 LS is a heavy-duty bicycle U-lock featuring a 14mm hardened MAX-PERFORMANCE steel shackle and patented oval crossbar for superior cut resistance. Its double deadbolt design enhances security against twist attacks, while the high-security disc-style cylinder and sliding dustcover extend lock life. The included Transit FlexFrame bracket offers versatile, hands-free transport, complemented by three stainless steel keysβ€”one equipped with a bright LED for low-light use. Designed for serious cyclists who demand robust protection without compromise. ## Description 14mm hardened MAX-PERFORMANCE STEEL SHACKLE resists bolt cutters and leverage attacks. Patented*, HARDENED OVAL CROSSBAR design is stronger than typical round tube. Hardened DOUBLE DEADBOLT DESIGN gives additional protection against twist attacks. HIGH SECURITY DISC-STYLE CYLINDER. Includes NEW TRANSIT FLEXFRAME-U transportation system which allows for versatile carrying. Protective vinyl coating. SLIDING DUSTCOVER protects and extends cylinder life. 3 STAINLESS STEEL KEYS– one lighted with high intensity LED BULB & REPLACEABLE BATTERY. Key Safe Program.Product dimensions: 4” x 11.5” (10.2cm x 29.2cm).Product weight: 4.10 lbs (1.86 kgs). Review: Good locks are important. - No bike lock will stop a determined and well-equipped thief. That said, this one's more likely to cause them to pick on somebody else - if they aren't the sort who destroys what they cannot steal. I get a good-quality lock because I want to have a chance to ride home, not because I have an expensive bike, and in my experience, this is a good-quality lock. Also, from personal experience, use the lock at home, too, We lost a treasured hand-assembled hybrid to a B&E jerk who was after electronics - and rode off on an irreplaceable custom that I'm sure got torn up. Review: Solid Lock, Improved Mounting Kit - Kryptonite is an industry standard for a reason. These locks are easy to use, and while heavy and a little bulky, give a good feeling of security. The longer shackle model of the lock can be a little bit harder to store on a bike however, especially if you use bottle cages. The mounting system for storage has been upgraded from previous lock models. Previous Kryptonite locks I have used included a plastic clip that was hard to attach and detach from the lock without breaking, not to mention a nightmare to install on the bike. With the new mounting kit, the plastic components are a little bit larger, but much more robust. The release mechanism feels less likely to snap, and the installation of the kit includes the use of a webbed strap and metal buckle (the bike is protected by a rubber insert) that firmly attach to the bike frame. Be cautious, however, that bike frames with non-round frame members can be a little hard to attach to. ## Features - 14mm hardened MAX-PERFORMANCE STEEL SHACKLE resists bolt cutters and leverage attacks - Patented*, HARDENED OVAL CROSSBAR design is stronger than typical round tube - Hardened DOUBLE DEADBOLT DESIGN gives additional protection against twist attacks - HIGH SECURITY DISC-STYLE CYLINDER - Includes NEW TRANSIT FLEXFRAME-U transportation system which allows for versatile carrying - Protective vinyl coating - SLIDING DUSTCOVER protects and extends cylinder life - 3 STAINLESS STEEL KEYS– one lighted with high intensity LED BULB & REPLACEABLE BATTERY - Key Safe Program - Product dimensions: 4” x 11.5” (10.2cm x 29.2cm) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B005YPK9N4 | | Additional Features | MAX-PERFORMANCE STEEL SHACKLE | | Best Sellers Rank | #80,878 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #53 in Bike U-Locks | | Brand Name | Kryptonite | | Color | Black, Orange | | Control Method | Remote | | Controller Type | Hand Control | | Customer Reviews | 4.5 4.5 out of 5 stars (1,505) | | Finish Types | Protective vinyl coating | | Global Trade Identification Number | 00720018001027 | | Included Components | U Lock | | Item Dimensions | 14.4 x 6.8 x 2.1 inches | | Item Weight | 1 Pounds | | Lock Type | Keyed | | Manufacturer | Kryptonite | | Material Type | Alloy Steel, Stainless Steel, Vinyl | | Model Number | 3500330 | | Recommended Uses For Product | Bike Lock, Cycling | | Shape | Oval, Round | | Style Name | Original | | UPC | 706084269141 720018001027 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Kryptonite - **Item dimensions L x W x H:** 14.4 x 6.8 x 2.1 inches - **Lock Type:** Keyed - **Material:** Alloy Steel, Stainless Steel, Vinyl - **Special Feature:** MAX-PERFORMANCE STEEL SHACKLE ## Images ![Evolution Series-4 LS Heavy Duty Bicycle U Lock Bike Lock with Transit FlexFrame Bracket (4-Inch x 11.5-Inch) - Image 1](https://m.media-amazon.com/images/I/61x9fjSvkrL.jpg) ## Available Options This product comes in different **Pattern, Style** options. ## Questions & Answers **Q: Can i mount this to the screw holes for the water bottle mount known as bosses or braze-ons?** A: It’s a sturdy nylon strap/clamp. The lock mount cinches on- not screws on. **Q: Is the 4" by 11.5" the Inside diameter? meaning it can go around a 4" pole?** A: The inside diameter, by my tape measure, is just over 4" by a sixteenth. **Q: Is the shaft length 14.4 or 11.5?** A: The shaft length is 11.5 inches. **Q: what is the security rating?** A: This lock is 8/10 on the Kryptonite Lock security scale. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good locks are important. *by H***T on February 5, 2026* No bike lock will stop a determined and well-equipped thief. That said, this one's more likely to cause them to pick on somebody else - if they aren't the sort who destroys what they cannot steal. I get a good-quality lock because I want to have a chance to ride home, not because I have an expensive bike, and in my experience, this is a good-quality lock. Also, from personal experience, use the lock at home, too, We lost a treasured hand-assembled hybrid to a B&E jerk who was after electronics - and rode off on an irreplaceable custom that I'm sure got torn up. ### ⭐⭐⭐⭐⭐ Solid Lock, Improved Mounting Kit *by R***T on March 14, 2015* Kryptonite is an industry standard for a reason. These locks are easy to use, and while heavy and a little bulky, give a good feeling of security. The longer shackle model of the lock can be a little bit harder to store on a bike however, especially if you use bottle cages. The mounting system for storage has been upgraded from previous lock models. Previous Kryptonite locks I have used included a plastic clip that was hard to attach and detach from the lock without breaking, not to mention a nightmare to install on the bike. With the new mounting kit, the plastic components are a little bit larger, but much more robust. The release mechanism feels less likely to snap, and the installation of the kit includes the use of a webbed strap and metal buckle (the bike is protected by a rubber insert) that firmly attach to the bike frame. Be cautious, however, that bike frames with non-round frame members can be a little hard to attach to. ### ⭐⭐⭐⭐⭐ I'll b here!!! *by J***N on March 4, 2026* Well worth the money!! U won't regret it but$$it --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.kg/products/1900094-evolution-series-4-ls-heavy-duty-bicycle-u-lock-bike](https://www.desertcart.kg/products/1900094-evolution-series-4-ls-heavy-duty-bicycle-u-lock-bike) --- *Product available on Desertcart Kyrgyzstan* *Store origin: KG* *Last updated: 2026-04-30*