The Ultimate High-Performance Suspension Upgrade
Initially developed in 2020 for our high-end ATV shock conversion kits, our mission was clear: Develop the absolute best adjustable shock available under $1,000.
After years of real-world feedback and continuous iteration, we are proud to offer a shock series that provides a professional-grade suspension upgrade for ATVs, Motorcycles, and various off-road vehicles. Experience the difference of precision damping and superior cooling.
| Adjustment | Operation Method |
|---|---|
| 📏 Length | Unscrew the lower shock eye and thread the locking nut to your desired length. |
| 🌀 Preload | Use the included adjustment tool to tighten the threaded collar above the spring coils. |
| ⚡ Compression | Fine-tune impact absorption by twisting the top knob located on the reservoir. |
| ↩️ Rebound | Control the shock's extension speed by twisting the bottom knob on the reservoir. |
Diamond J Customs will replace any shock components that fail within three months of purchase at no charge.
*Covers one replacement per purchase. Does not cover normal wear, improper installation, or misuse. Proper installation angles are critical to prevent premature wear.
Delrin Bushing Upgrade: For customers seeking maximum durability and reduced friction, we offer Delrin shock bushings as an optional upgrade. Available for purchase in our eBay store.
Extended brake lines we recommend using with this kit: https://www.ebay.com/itm/313895006170
This is a widening with shock conversion kit for the FRONT of your ATV,
Widen the REAR of your ATV also with our Wheel Spacers: https://www.ebay.com/itm/183818839938
Note: This kit is not compatible with pre-2000 Honda 250x
CLICK HERE TO GO TO OUR eBay store:
http://stores.ebay.com/Diamond-J-Customs_W0QQsspagenameZMEQ3aFQ3aSTQQtZkm
PATENT PENDING
THIS KIT IS FOR a widening kit that INCLUDES the shock conversion components to allow for longer shocks (like 400ex, 450R, Z400 or YFZ450 shocks) on your 250ex (not 250x). See our eBay store for a less expensive widening kit to widen your 250ex with stock shocks and stock a-arms and also kits for 250x's. For the 250ex, we really recommend the 400ex shocks with this kit. The 450r shocks are even better, but for the money, the 400ex shocks are an excellent upgrade to the 250ex. The widening kit with shock conversion is only available in the +6" setting because the +4.5" setting would force the shocks to be too vertical.
More about Diamond J Customs products:
Diamond J Customs' a-arm and shock widening kits are a unique approach to increasing the width of an ATV. Instead of replacing the a-arms with custom built, expensive after-market a-arms, this kit simply relocates where the a-arms and shocks mount to the frame. The precision laser-cut brackets supplied in the kit bolt to the stock mounts on the frame, and provide two sets of new mount locations for the a-arms and shocks that are 2 ¼ or 3 inches outward on each side. This provides a 4 ½ or 6 inch total increase in the width of the ATV while making use of all of the stock suspension components. Threaded extensions are also supplied to extend the steering tie rods to match the widening kit.
Some of the widening kits also include shock mount kits that are adjustable to allow the customer to vary the ride height of the ATV, utilize longer shocks, or both. There is also a universal shock conversion kit sold separately that bolts on to the rest of the kits to add some of the same adjustability.
Kits come complete with all necessary hardware and tie rod extensions that thread onto your stock tie rods and secure in place with jam nuts. Please specify if you want the tie rod extensions for the +4.5" or +6.0" setting by letting us know at the time of ordering. If we don't hear from you within a couple days, we will assume you want the +6 kit.
Shocks and a-arms are not included with any of the kits.
The kits require no cutting or welding and can be installed easily in an afternoon by a typical home mechanic. Brake lines are typically long enough for the conversion if the intermediate support on the a-arms is disconnected to provide more slack in the lines. Rerouting the brake lines around frame members to give a more direct path to the hubs can also help. Longer brake lines are available on other websites if the customer prefers to also make that modification. The following ATV's will most likely need longer brake lines for the +6" setting: YFZ450, 450R and Z400.
Some of the pictures show the ATV's with the front bumper removed so you can see the kit more easily. The bumper mounts are not affected by the kits. Stock and aftermarket bumpers should work fine with all kits.
Steel brackets are made from 1/4" thick carbon steel and are designed to be used in all types of riding and racing, including motocross. Many customers are using these kits to race every weekend. The a-arm mounting brackets are designed to be as strong as the a-arms connecting to them. The eight separate brackets work together to share the load in all directions (such as rough terrain or hooking an occasional tree on the trails). These kits ARE designed (and used) for the harsh conditions of motocross racing.
All kits come powder coated gloss black. Color choice is not available, but other colors can be painted or powder coated by the customer over the gloss black finish. Kit components go through a seven stage chemical dip cleaning process, electro-statically dipped in black primer, baked, then powder coated and baked again to a super high-strength gloss-black finish.
Like most other EBay items, you are using this "as-is" kit at your own risk, with no warranty expressed or implied. By bidding, you are agreeing to these conditions. As you can see from our feedback, we can be very helpful if you have questions before or after your purchase, and we will do everything we can to make sure you are as thrilled with this conversion kit as we are.
We are thrilled with the performance of this kit, and excited that so many others have enjoyed it as well. You won't be disappointed!!! As you can see from our feedback, these kits are for real, and we are very fair & honest people to work with!! Send us pictures of your ATV after you have installed it so we can include it on our website galleries.
Shipping & handling (including other fees) is flat rate, and our products are all preboxed and ready to ship. Combined shipping is not usually possible.
We also have awesome looking and very strong custom billet aluminum rear wheel spacers that will fit these ATV's and spread the rear 2 inches on each side. They are listed in our eBay store.
The goal of Diamond J Customs is to develop and offer products that add performance to the ATV without the enormous price tag found on other ATV aftermarket products. We do this by designing kits that will allow use of as many stock components as possible, and allow you to mount higher performing parts from other ATV’s on your model. These parts are often available at reasonable prices on eBay, saving you money. We've sold literally hundreds of these kits to other “Quad Fanatics” and from the feedback from customers on eBay, you can see that they have been more than satisfied with the products. We work hard to design products that maximize the performance of your ATV while keeping prices as low as possible. Safety is not something that will be compromised.