Uprated Diff Bolt, End Bushing & collar kit, fix For Bmw X3M/X4M Exclusive to H4ck Performance.
Our latest kit is now UK made.
Experience the enhanced performance of your X3M & X4M F97 F98 with our premium uprated differential bolt, bush & collar kit.
Common issues like diff bolt is no longer a concern. Whether you enjoy drifting, launching, or aggressive driving, our kit ensures a smooth and reliable experience.
Our kit greatly reduces the risk of bolt failure, providing peace of mind for high-performance driving and power, bolts are known to deform on any level including stock. Whether your car is stock power or tuned this is the true complete kit to reduce potential failure causing ££££’s in damages (Diff failure, driveshafts etc etc).
Complete Kit includes:
Reinforced Uprated 14mm bolt
Reinforced end solid bushing
Reinforced & strengthen collar
High-quality reinforced washers
Aluminium Tophat
Grooved fast lock nut
Drill bit for installation
Full instructions
Our upgraded bolt is over 37% stronger than the BMW revised bolt and significantly more durable than the original BMW part. To be precise our bolt can take 170,000 psi pressure (Extreme strength bolt). Paired with our solid end bushing to create seamless permanent fix.
Full fitting instructions - Installation time 1.5hrs.
We have fitting partners nationwide, charge to fit £130/£180. Dependent on garage. Contact us through instagram for more details or email us.
These are tested kits, not many owners know the true condition of their current bolt due to location not being easily accessible, however very high ratio who do remove confirm failure (Bent), whilst other vehicle’s make clunking sound or grinding/whining which reflects the bolt being nearer the end of it’s life span - Do not wait around for sounds, this can cause pre mature wear on other components. We advise this fix.
Bmw are aware of issue, they have revised bolt in 2021/22 but unfortunately it’s proven unsuccessful.
Whilst we are aware of other solution’s “Complete Solid bushing” or “lockdown kit” we don’t recommend. From the feedback first hand on our test vehicles and worldwide customers base. Firstly the sound it’s creates through cabin and crunch on low speeds doesn’t make this a great experience for daily driving. Leaving zero flexibility within the area will lead to cataphoric component failure in due time. Vehicles which are suited for solid bushing are track only vehicles.
NOTE: These bolts have been tested on many vehicles worldwide from stock, stage 1, stage 2 and stage 3 vehicles, these are not homemade bolts kit, we have sold over 70 units worldwide and proven highly successful.
We also supply many of the UK’s leading tuner’s and garage’s, should you want to know if they stock simply ask us.
At H4ck Performance, we value customer satisfaction above all else. We strive to ensure that all products are in stock and ready to ship. However, in the instance that a product is not immediately available, we will promptly notify you before you place your order, so you can avoid any disappointment.
Our typical turnaround time for dispatch is between 2 to 5 days. Shipping starts from as little as £5.99
Please note that this timeframe may be subject to supplier availability. We take pride in being transparent about lead times, and if a product has a longer lead time, we will personally contact you to provide updates on the shipping process.
Let us take care of all your product needs with excellent customer service.
We are happy to inform you that we offer worldwide shipping on all our products. You can place your order with confidence knowing that we are committed to maintaining a high level of service quality.
In case you need to return your product, we offer a 14-day return policy. Please refer to our returns policy for more details.
Additionally, to give you extra peace of mind, This product comes with a manufacturer's warranty. You can check our warranty policy for more information.
We're committed to providing you with personalised support and assurance with all your order decisions. Our team is constantly striving to improve your experience with us, and we stand behind every product we sell. We're here to help answer any questions you may have.
Don't hesitate to contact us for more information or assistance.
Customer Reviews
top of page
bottom of page