# TBparts - DNM 350lb Fully Adjustable Rear Shock and HD Fork Springs Kit for KLX140R & L > This is a plain-text (markdown) copy of a page on tboltusa.com, made for AI assistants. People see the same page at the HTML link below. - **Breadcrumbs:** [Home](https://tboltusa.com/store/index.md) > [Japanese Mini Bike Parts](https://tboltusa.com/store/japanese-mini-bike-parts-c-100.md) > [KLX 140](https://tboltusa.com/store/japanese-mini-bike-parts-klx-140-c-100_602.md) > [KLX140 Suspension](https://tboltusa.com/store/klx-140-klx140-suspension-c-100_602_1144.md) > TBparts - DNM 350lb Fully Adjustable Rear Shock and HD Fork Springs Kit for KLX140R & L - **Web page:** [this page on tboltusa.com](https://tboltusa.com/store/tbparts-dnm-350lb-fully-adjustable-rear-shock-and-hd-fork-springs-kit-for-klx140r-p-12590.html) - **Markdown:** [this page as markdown](https://tboltusa.com/store/tbparts-dnm-350lb-fully-adjustable-rear-shock-and-hd-fork-springs-kit-for-klx140r-p-12590.md) - **Generated:** 2026-11-11 00:03 EST - **Site guide for AI assistants:** [llms.txt](https://tboltusa.com/llms.txt) - **Your list:** To list everything you have looked at in one page, with current prices and stock, add ids to this address (comma separated, up to 20 of each): `https://tboltusa.com/store/seen.md?p=12590` All prices are in US dollars (USD). Shipping and any tax are worked out at checkout. ## Summary - **Part number:** TBW9280 - **Price:** $354.99 USD - **Stock:** 1 left. This is a kit: the count is how many complete kits can be built from the parts on hand. - **Product id:** 12590 - **Product last changed:** 2026-04-23 ## What it fits The store lists a part under each bike or engine model it is meant for (the categories below) and may name models in the description. Do not assume it fits a bike or engine that is not named here; ask the store first. - [Japanese Mini Bike Parts > KLX 140 > KLX140 Suspension](https://tboltusa.com/store/klx-140-klx140-suspension-c-100_602_1144.md) - [TB Parts > KLX140](https://tboltusa.com/store/tb-parts-klx140-c-68_1113.md) Where a fitment line says "All", it means all years of the model named on that line, not all bikes. ## Description (the store's own text) Adjustable Rear Shock 350# & Front Fork Springs – KLX140 R & L TBparts Heavy Duty suspension kit for the Kawasaki KLX140. If you need to stiffen up the suspension of your KLX140 this is one of the best kits you will find. It will increases the spring rate of the front forks and rear shock so you can push the limits of your KLX140. This kit includes our rear shock that has adjustable rebound and compression, better suited for dialing in your needs at the local mini MX track. We use this with the 14” and 16” rear wheel R/L models. **Rear Shock, DNM – Fully Adjustable** TBparts adjustable rear shock for the Kawasaki KLX140! We worked with DNM to make a rear shock geared toward racing on an MX track! First our shock uses a heavy 350# spring. This gives you the base to stiffen up your suspension and push it harder and further! Next is the adjustability of compression and rebound. This works much better than the OEM shock and allows you to dial the shock in to your exact preferences and needs with just a few clicks. The stroke of this shock is also longer (At least 14mm from what we measured) giving you more travel at the rear wheel! **Fork Spring Set, Heavy Duty** TBparts Heavy Duty Fork Spring set for the Kawasaki KLX140 R & L! These are approximately 55% stiffer than the factory springs. They are also over 7″ longer, deleting the need for the OEM fork Spring Spacer. These work great for adult riders, they are almost a must as the stock springs are very small and weak. **Key Features and Specifications:** - 350# spring great for adults - Adjustable Compression - Adjustable Rebound - 405mm eye to eye - 100mm stroke (OEM KLX140L shock measured 86mm) - Includes new bushings - Slick black appearance - Direct bolt on, no modifications needed on any model. - Huge Value **Kit Includes:** - TBW1609 - DNM 350 Adjustable Compression and Rebound - TBW1627 - HD Fork Spring **Installation Note:** Includes nut for use with OEM bolt on bottom side. Please inspect your OEM shock bolts, linkage bolts, and bushings/bearings. If they are worn or bent your suspension will not function properly and it will cause excessive wear. Also be sure all linkage bolts stay torqued to spec. These are common issues we see that can easily be avoided, they ensure a smooth feel and long life out of your rear shock. **Note:** Full size spring removes the need for the OEM spacer ## Shipping and returns - Flat rate shipping is $8 for parts orders under $75 and free for most parts orders over $75, within the continental 48 states. Heavy items (engines, complete bikes, suspension) are excluded. - Full shipping policy: [Shipping policies](https://tboltusa.com/store/shipping-policies-i-6.md) - Returns: the store's own policy page says how returns, exchanges and cancellations work. Please read it before buying: [Returns, Exchanges and Cancellations](https://tboltusa.com/store/returns-exchanges-and-cancellations-i-11.md) The page begins: "All products returned to T Bolt USA must be reviewed and approved." ## How to buy For a person: open [TBparts - DNM 350lb Fully Adjustable Rear Shock and HD Fork Springs Kit for KLX140R & L](https://tboltusa.com/store/tbparts-dnm-350lb-fully-adjustable-rear-shock-and-hd-fork-springs-kit-for-klx140r-p-12590.html), choose any options, press "Add to Cart", then check out from the cart. Payment is only ever entered by the person, on tboltusa.com's own checkout pages. For an AI assistant building a cart: `https://tboltusa.com/cart/new/item/12590/qty/1` starts one with this product (the first value of every option, qty 1), `https://tboltusa.com/cart//add/item/12590/qty/1` adds it to a cart you already started, and `https://tboltusa.com/cart//zip/` gives the shipping options to a US ZIP code. 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Cart: [Shopping cart](https://tboltusa.com/store/shopping_cart.php) ## Photos - [Photo 1](https://tboltusa.com/store/img/p/12590/tbparts-dnm-350lb-fully-adjustable-rear-shock-and-hd-fork-springs-kit-for-klx140-1.jpg) - [Photo 2](https://tboltusa.com/store/img/p/12590/tbparts-dnm-350lb-fully-adjustable-rear-shock-and-hd-fork-springs-kit-for-klx140-2.jpg) ## Support Since 2004, every purchase from TBolt USA includes access to technical support from our staff of experts and our online [Pit Bike Technical Info Database](https://tboltusa.com/store/tbolt-usa-pit-bike-minimoto-technical-info-database-tech-15.md)! We have all necessary support parts on hand. *Most* orders ship same, or next business day, unless otherwise noted above.