Mountain Bike Suspension Bushes (One Bush Per Kit)
£13.75
61% Off
Mountain Bike Suspension Bushes Stainless Steel 1/2″ x 1/2″ (12.7mm x 12.7mm) – 6mm, 8mm and 10mm bore available. Manufactured by Profin Components.
- ****You absolutely need a DU bush tool to fit these, don’t attempt to press them in with a socket, you will split the poly bush – buy a tool here****
- Each kit contains 2 x spacers, 1 x low friction poly bushing and stainless steel mounting hardware. If you want to change the shock hardware in 2 x shock eyelets you will need to order 2 kits.
Trade discounts available, please contact us.
Made with tight tolerances and quality materials – stainless steel with acetal spacers (sizes 19mm and above), or PETG for sizes below 19mm. Every kit is supplied with a superior low friction polymer bush.
Why Steel?
Numerous mountain bike suspension bushes are available on the market made from materials such as anodised aluminium, brass, steel and grade 5 titanium – our aim was to produce the hardest wearing kits at the most attractive price of any retailer.
All of the premium brands over the World choose either Stainless Steel, Titanium or Anodised Aluminium, with industry giants Fox offering Stainless Steel in addition to their lower priced anodised alloy kits.
We made prototypes from all of the aforementioned materials and subjected them to months of real world testing with various riders around the U.K. Of course there is readily available data for all of those materials online for tensile strength, Rockwell Hardness, density and so forth but our concern as mountainbikers is the partial rotation backwards and forwards within the shock eyelet bushing and how well the material holds up before changes to the critical outside diameter are noted. The two class leaders in this department are 303 Stainless Steel followed by Grade 5 Titanium.
Titanium has a weight advantage over stainless steel but for perspective a 22mm x 8mm stainless bushing weighs 13g to 7.5g for a Grade 5 Titanium equivalent. However even though Titanium has a greater tensile strength it scratches and wears more quickly than Stainless Steel, we decided that a rider was unlikely to notice a 5.5g weight difference but they would notice when they had to change their hardware. We settled on Steel.
So if Stainless Steel is so great why isn’t everyone using it?
The only real issue with stainless steel is how difficult it is to machine. Even free machining 303 Stainless Steel is hard on tooling. Tool breakages and tool wear significantly add to production time and cost. Our tolerance on the outer diameter of our stainless steel parts is H7 (+0.00mm/-0.018mm, extremely tight, to ensure that the part fits correctly in the eyelet bushing and is free to rotate without play. That kind of tolerance is difficult to maintain, even more so when working with stainless steel.
Investment to reduce the cost
The reason that our shock bushing kits are the most competitively priced on the market, despite being made of stainless steel is because we have invested heavily in machinery and process. We manufacture in quantities of thousands, not tens, this ensures that we have stock ready to dispatch and keeps the cost down for our customers.
Looking for Offset Shock Mounting Hardware – click here.
Which width of MTB Shock Bushing should I buy?
You can either check the manufacturer’s tech sheets to see if they have published the size for your bike or preferably just measure them yourself with a vernier gauge, you won’t be able to get an accurate reading with a tape measure.
First measure the bolt diameter, it will be 6mm, 8mm or 10mm like so:
Then measure the width:
Don’t forget you will need a DU Bush tool to fit your new Bushing – we made this high quality CNC machined tool right here in Lancashire.
Bolt Size and Width | 6mm 15.00mm, 6mm 20.00mm, 6mm 21.80mm, 6mm 25.00mm, 6mm 21.80mm, 6mm 22.00mm, 6mm 25.40mm, 6mm 30.00mm, 6mm 41.00mm, 8mm 15.00mm, 8mm 15.75mm, 8mm 16mm, 8mm 16.5mm, 8mm 19.00mm, 8mm 20.00mm, 8mm 21.80mm, 8mm 22.00mm, 8mm 22.20mm, 8mm 24.00, 8mm 25.00mm, 8mm 25.40, 8mm 30.00mm, 8mm 34.00mm, 8mm 35.00mm, 8mm 35.5mm, 8mm 36mm, 8mm 40.00mm, 8mm 41.00mm, 8mm 42.5mm, 8mm 45.00mm, 10mm 15.00mm, 10mm 16mm, 10mm 20mm, 10mm 22mm, 10mm 22.2, 10mm 25.00mm, 10mm 30mm, 10mm 40mm, 8mm 50mm (offset spacers for Trek), 10mm 50mm (offset spacers for Trek), 10mm 60mm |
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