MTB Shock Bushings & Rear Shock Hardware
Long lasting, guaranteed to fit perfectly
Compatible with all major suspension brands
Our kits are designed to fit everything from Fox to EXT, Push to Marzocchi, DVO to RockShox and many more.
No Measuring Required
We hold detailed sizing data for a wide range of mountain bike frames and rear shocks. Rather than asking you to measure mounting widths or bolt diameters, we machine each kit to suit the specific frame and shock model provided when ordering.
This removes the risk of ordering the wrong size and ensures the hardware fits correctly without modification.
If you already know your mounting size, you can select it directly. If not, simply enter your bike and shock details and we will take care of the rest.
Whether you're looking to install a 216mm shock, mullet your bike or fine tune the geometry - you'll need Offset Bushings.
View allWhether you have an E10, E82, E55 or whatever the latest frame Dengfu has cooked up is named - we have the kit for you.
Dengfu KitsHave a question ? We are here to help.
Check out the most common questions our customers asked. Still have questions? Contact our customer support.
What do you need to know to order?
Just your frame & shock models! We have the sizes on file in 99% of cases so there's no need to measure anything.
Do you ship overseas?
Yes, we ship all over the world. Shipping costs will apply, and will be added at checkout.
How long do you take to make them?
We're pretty speedy! We aim to machine all orders within 2 working days from your order.
Can you use Offset Bushings in reverse?
We made a dedicated page just for this question, you can find it here.
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What Are Rear Shock Bushings?
Rear shock bushings, often referred to as shock mounting hardware, sit inside the eyelet of your rear shock and allow it to pivot smoothly within the frame. They provide a precise interface between the shock and the mounting bolt, ensuring correct alignment and controlled movement under load.
They are produced in a wide range of sizes, from common metric standards to unique dimensions specific to certain frames.
Over time these bushings wear, which can lead to play in the shock mount or knocking under compression. Replacing worn hardware restores proper fit and keeps the suspension operating as intended.
Most rear shocks use a 15mm diameter eyelet at each end. A DU bushing is pressed into this eyelet, reducing the internal diameter to 12.7mm. The shock mounting hardware is then fitted through this in the size required for the frame.
Eyelet vs Trunnion Mount Shocks
Most rear shocks use a traditional eyelet mount at each end. These eyelets accept a DU bushing and shock mounting hardware, which allows the shock to pivot within the frame.
Some modern frames use a trunnion mount at one end of the shock. Trunnion shocks bolt directly into the frame and do not use standard mounting hardware at that end. The opposite end may still use a conventional eyelet and hardware kit.
If your shock has round eyelets with a removable DU bushing inside, it uses standard rear shock bushings.
12mm vs 12.7mm (½") Shock Eyelets
Most modern mountain bike shocks from brands such as Fox and RockShox use a 12.7mm internal eyelet once the DU bushing is installed. This is often referred to as a half inch eyelet.
Very few shocks use a 12mm internal diameter eyelet instead. These are typically older models such as Ohlins STX, DNM or some pre 2012 Manitou shocks. The difference in size is small, but the hardware is not interchangeable. Fitting the wrong size can cause movement in the mount or damage to the frame.
All of our standard rear shock bushing kits are designed for 12.7mm eyelets. If you are unsure which size your shock uses, enter your shock model when ordering and we will confirm this for you.
Rear shock bushings, often referred to as shock mounting hardware, sit inside the eyelet of your rear shock and allow it to pivot smoothly within the frame. They provide a precise interface between the shock and the mounting bolt, ensuring correct alignment and controlled movement under load.
They are produced in a wide range of sizes, from common metric standards to unique dimensions specific to certain frames.
Over time these bushings wear, which can lead to play in the shock mount or knocking under compression. Replacing worn hardware restores proper fit and keeps the suspension operating as intended.
Most rear shocks use a 15mm diameter eyelet at each end. A DU bushing is pressed into this eyelet, reducing the internal diameter to 12.7mm. The shock mounting hardware is then fitted through this in the size required for the frame.
Most rear shocks use a traditional eyelet mount at each end. These eyelets accept a DU bushing and shock mounting hardware, which allows the shock to pivot within the frame.
Some modern frames use a trunnion mount at one end of the shock. Trunnion shocks bolt directly into the frame and do not use standard mounting hardware at that end. The opposite end may still use a conventional eyelet and hardware kit.
If your shock has round eyelets with a removable DU bushing inside, it uses standard rear shock bushings.
Most modern mountain bike shocks from brands such as Fox and RockShox use a 12.7mm internal eyelet once the DU bushing is installed. This is often referred to as a half inch eyelet.
Very few shocks use a 12mm internal diameter eyelet instead. These are typically older models such as Ohlins STX, DNM or some pre 2012 Manitou shocks. The difference in size is small, but the hardware is not interchangeable. Fitting the wrong size can cause movement in the mount or damage to the frame.
All of our standard rear shock bushing kits are designed for 12.7mm eyelets. If you are unsure which size your shock uses, enter your shock model when ordering and we will confirm this for you.
FAQ
Why Correct Shock Hardware Matters
Incorrectly sized shock hardware can cause side loading, premature DU bushing wear and frame damage. Precision fitment ensures smooth pivoting movement and protects both the shock and frame.
Where do you ship to?
We ship worldwide. Shipping options and delivery times are shown at checkout based on your location.
How long does it take to machine and ship my order?
All rear shock bushings are machined to order. Most orders are dispatched within just two working days. During busy periods this may vary slightly, but we will always confirm lead time if required.
What size rear shock bushings do I need?
Each frame is designed around a specific mounting width and bolt diameter. If you know your size, you can select it directly. If not, enter your frame and shock model when ordering and we will machine the correct hardware to suit.
How do I know if my shock bushings are worn?
Signs of wear include visible play at the shock mount, knocking under compression, or ovalisation of the DU bushing. If in doubt, removal and inspection is recommended.
Are your rear shock bushings compatible with Fox and RockShox?
Our rear shock bushing kits are designed for modern eyelet style mountain bike shocks from leading suspension brands. These include, but are not limited to:
- RockShox
- Fox
- Cane Creek
- BOS (12.7mm)
- X-Fusion (12.7mm)
- DVO
- Manitou (12.7mm)
- MRP
- Marzocchi
- 5th Element
- EXT
- Push
- Öhlins - STX (12.7mm models only), TTX Universal
(TTX uses either 14mm or 12.7mm bushings as standard. If yours is using 14mm then you also need this product to use our bushings.)
Do I need to replace the DU bushing at the same time?
If there is noticeable play in the shock eyelet or visible wear, replacing the DU bushing is recommended. We offer replacement DU bushings and the correct tool for installation.
Shock Bushings or Shock Hardware?
These are often used interchangeably, however we refer to the entire kit as 'hardware' whilst the main component and associated spacers are known as the 'bushing'.
What are Offset Bushings?
Offset bushings are a type of rear shock bushing where the bolt hole is positioned slightly off centre. This allows small adjustments to a bike’s geometry by subtly altering head angle and bottom bracket height. You can learn about Offset Bushings here and order them here. Offset Bushings were the original product we developed, which is where our name comes from.