Bmw X3M F97 X4M F98 Rear Differential Bush Bolt Collar Upgrade, Complete Diff Kit Exclusive Fj Motorwerkes
- Description
- Fitment
- Refund Policy
The only ultimate complete kit on the market - Uprated Diff Bolt, End Bushing & collar kit, fix For Bmw X3M/X4M Exclusive to Fj Motorwerkes.
Our latest revision is now UK made, using premium CNC machine engineering and stainless steel components only.
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 in stainless steel includes:
- Extreme strength, upgraded-sized bolt
- Reinforced custom end solid bushing
- Reinforced & strengthened CNC collar
- Reinforced CNC front washer
- Reinforced CNC crush washer
- Reinforced CNC step down bushing
- Grooved fast lock nut
- Drill bit for installation
- Full instructions
Our upgraded bolt is over 39% 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 fix.
Full fitting instructions - Installation time 1.5hrs/2.5hrs
We have fitting partners nationwide, please message us to enquire. Labour charge 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, 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 - 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 revised bolt in late 2021 but unfortunately it’s proven unsuccessful.
While we recognise other offerings “solid bushings” or “lockdown braces”. Based on firsthand feedback on our test vehicles. Those solutions may create excessive noise and vibrations in the cabin at low speeds, making daily driving uncomfortable. Additionally, lack of flexibility, which can lead to component failure over time. Solid bushings or Braces are best suited for track vehicles.
NOTE: These bolts are tested on vehicles worldwide from stock, stage 1, stage 2 and stage 3 vehicles, sold 100’s 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. Our kits are the go to for many influencers and youtube content creators show casing the true ability of our product.
See our other listing for SUPPLY & FIT service available too!
Returns
Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange. All items are subject to 15% restocking fee from the manufacturer.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
Additional non-returnable items:
Gift cards
Downloadable software products
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer.
There are certain situations where only partial refunds are granted (if applicable)
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
If you would like to start a return please click here
Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please contact us at info@amtuning.ca.
Sale items (if applicable)
Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
Exchanges (if applicable)
To start an exchange, click here
Non-refundable items
The following items are non-refundable and non-returnable once purchased: oils, fuel or oil additives, filters, tuning cables, OBDeleven products, Braum seats, spark plugs, coil packs, and similar consumable, wheel spacers, wheels bolts, license plate brackets, electronic tuning components and any other product subject to discretion of AM Tuning Canada.
Other products from brands such as MHD, Bootmod3, Ecutek, Braum racing, Novitec are also non-refundable and non-returnable.
All sales of these items are final and are subject to the policies and discretion of AM Tuning. By completing a purchase, the customer acknowledges and agrees to these terms.
