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Mullet bike geometry calculator2/25/2023 ![]() ![]() This same phenomenon occurs on your bike. They want to straighten when you push the cart forward. Trail is what makes the bike's front wheel self-straighten when it is moving forward. Think of the wheels of a shopping cart. If you draw a line through the steering axis to the ground (as in the diagram above), trail is the distance from that point to where the front wheel touches the ground. For 29" bikes, the 51mm offset fork has been the standard for nearly a decade. Its purpose is to adjust the amount of 'trail' in the steering geometry. The diagram above shows how the front axle is offset so it is forward of the steering axis. This offset is measured in millimeters. Shop mountain bikes What is fork offset?įork offset is the distance between the front axle and the steering axis of the fork. ![]() Let's find out how fork offset affects your ride, why reduced-offset forks are becoming popular, and how riding a reduced offset fork feels to the average Joe (me). I’ve studied the science and switched back and forth between reduced offset and “traditional” 51mm offset 29er forks on my own bikes. If you're interested in trying a reduced offset fork, this article is for you. Hungry for more speed, I was quick to buy a new fork and test it out. Mountain bikes equipped with reduced-offset suspension forks started getting buzz a couple of years ago. Mountain Bike Rider produced a video all about MTB geometry and have a section explaining how Offset Bushings work, you can check it out below from the 2:30 mark.Dropper posts, extra-long reach, coil shocks, 29” wheels, tire inserts - I’ve always been quick to try any tech that claimed to improve downhill performance. We aim to reply within a couple of hours. If you have any questions, please do get in touch. Please note that older Manitou and BOS shocks use 12mm diameter bushings and are not compatible. Please see our Supported bikes page for more info. We produce shock bushings in 12.7mm diameter (industry standard) only. Including but not limited to RockShox, Fox, Cane Creek, Manitou, DVO, Extreme Shox, X-Fusion, BOS & 5 th Element. Whether you have an Intense or an older Lapierre which use 6mm bolts, or a recent Commencal which use 10mm bolts, you’ll notice a significant improvement to your bikes handling after installation.įrames with 8mm bolts are the most common - these are commonly used by Specialized, Orange, Santa Cruz & many others. 10mm bolt – 1mm offset | 5° HA | -5mm BB.8mm bolt – 2mm offset | 1.0° HA | -10mm BB.6mm bolt – 3mm offset | 1.5° HA | -15mm BB.On average you should expect the following adjustment. This is down to shock length & leverage ratio along with the shock hardware bolt diameter. The adjustment you'll get when using Offset Bushings can change slightly from one bike to the next. To find out how our Offset Bushings perform, check out our reviews. If your shock bushing is made from a harder metal than your shock bolt it can potentially cause premature wear to shock bolts which can result in failure and added expense. Keep in mind that shock bushings are wearable items, as they're designed to wear before your shock bolts do. Whilst other manufacturers might choose to use materials such as steel or titanium for this purpose, we find that bass offers the best mix of qualities for our products. Brass offers an ideal balance between performance and longevity when it comes to bushing applications. We use aluminium for our spacers due to its light weight. It's often used for industrial bushing purposes due to this. We put a lot of time into finding reliable partners to source material from – our brass rod is machined to very high tolerances to provide the best fit possible.īrass has self-lubricating properties which makes it a perfect material for the job. Our shock bushings are machined from both brass and aluminium. The stroke of your shock remains constant so your travel will not be adjusted at all. One common misconception is that they will reduce the amount of travel your bicycle has - they do not. This mimics the effect of a slightly compressed shock which will in turn lower and slacken the geometry of the bicycle. When installing, make sure the offset holes are facing towards each other – towards the centre of the shock. That means pushing your old hardware out and pressing your new Offset Bushings in. Offset Bushings simply replace your original shock hardware. ![]() Our Offset Bushings even scored a top ten finish at the Red Bull Rampage whilst being used by Rémy Métailler. In one test with a top DH World Cup rider, they found they were 4 seconds faster over a lap of Fort William, Scotland after fitting Offset Bushings - a difference of up to 25 places! They've been used for years by top riders worldwide in everything from DH to Enduro and even XC racing to help them feel more comfortable on their bikes and ride faster. ![]()
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