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Horizon Motorsport

Swift Sport Spec-R Springs - F82 M4

4X908R

Regular price $349.00
Sale price $349.00 Regular price $530.00
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Swift Sport Spec-R Springs - F82 M4

$349.00

Description

Purpose-built for track enthusiasts, Swift's Spec-R Springs transform the F82 M4's suspension dynamics through precision engineering. The optimized spring rates—calibrated to factory shock valve limits—enhance cornering aggression while the recalibrated ride height maximizes suspension geometry for superior traction. Stock dampers handle these rates capably, though upgrading to performance shocks unlocks additional gains. The result: sharper turn-in, reduced body roll, and a platform ready for serious circuit work. Engineered for drivers who demand more from their M4.


Swift Spec-R Sport Springs were engineered with 3 characteristics in mind.

  • Modified ride height compared to Sport Springs to maximize optimal suspension geometry
  • Further increasing the spring rate to enhance overall performance. The increase in spring rate is based on the upper limits of the vehicles factory shock valving
  • Maintaining optimal comfort level for street use

Swift's Spec-R Springs leverage proven spring technology with elevated stiffness and refined geometry tailored for circuit performance. Engineered to the threshold of factory shock capacity, these springs deliver track-validated handling without sacrificing street usability. The same material science and winding precision as Swift's sport line ensures durability and consistency, while the aggressive rate and modest ride height adjustment maximize suspension response. Ideal for drivers balancing weekend track days with daily driving demands on the F82 M4.

Features:

  • Spring Rate Front: 279 Lbs/Inch
  • Spring Rate Rear: 726 Lbs/Inch
  • Front Lowering: -1.1 Inch
  • Rear Lowering: -0.9 Inch
  • Improved handling
  • Made for the track enthusiast
  • Reduces body roll

FITMENT

- BMW M4 F82 2015 +

Note: Vehicle drop rate is based on the year, model and option of the test vehicle, and may vary based on each vehicle condition

What's the returns policy?

Return Policy

We understand that sometimes a return or exchange may be necessary, and we're here to help make the process as smooth as possible. To start a return or exchange, please reach out to us via our contact page form or submit a request in your account. It's important to note that the return/exchange process must be initiated within 3 weeks of delivery to be eligible for a refund / exchange. After 3 weeks, unfortunately, we will not be able to accommodate any returns or exchanges. Please note that a 20% restocking fee will be applied to any return once the order has been processed.

It's important to return the item in its original packaging and to package it properly to ensure safe transportation. We highly recommend insuring your return package as we cannot be held liable for any lost or damaged packages during the return shipments. Upon inspection, a refund will be issued, which typically takes 2-4 business days to process. Please note that shipping costs are non-refundable and are the responsibility of the customer unless the customer's order was damaged or incorrect.

Disclaimer for Carbon Fiber Products

We encourage you to test fit your items before making any significant modifications, such as sanding, drilling, or applying adhesive. If you have any concerns about installation, please do not hesitate to contact us for assistance. Please note that once a part (including non-carbon fiber parts) has been installed or modified, it is no longer eligible for a refund or exchange under any circumstances. To put it simply, if a part cannot be returned in the condition it was received in, it cannot be returned to us.

Disclaimer for Suspension Components

Please note that we do not accept returns on suspension components. This includes springs, coilovers, control arms, and any other part that affects the suspension of a vehicle.

How fast is shipping?

Shipping Policy

We understand that receiving your parts quickly is important, so we do our best to ship them out as soon as possible. Most of our carbon fiber and performance parts are shipped via UPS, while smaller items like buttons are shipped via USPS. Horizon Motorsport does not guarantee any type of reimbursement in the event of loss or damage. We may require a signature upon delivery for added security. Shipping fees cover handling, packaging, and carrier charges and are not a direct reflection of the carrier’s standalone rate.

Once you place your order, you'll receive a confirmation email letting you know that we're processing your order. Please give us 1-3 business days for tracking information to update on our website. If it's been 4 days and you haven't received tracking information, please send us an email at sales@horizonmotorsport.com with your order number and address, and we'll assist you promptly.

To ensure safe delivery, we recommend being present during the estimated delivery time. Unfortunately, we've had cases of packages being stolen after delivery, so it's important to take precautions. Please note that once your order is marked as "delivered" on the tracking page, it becomes your responsibility to ensure its safety. If you have any concerns or questions about shipping, please don't hesitate to reach out to us at any time.

Damaged Items

In the unfortunate event that your part is damaged during shipping, please do not dispose of the packaging materials. Doing so could jeopardize your reimbursement for the damage, as we require documentation to file an insurance claim. If the part arrived damaged, do not attempt installation. Signs of attempted installation will void any damage claim and a return will not be accepted.

If you discover damage to your item, please open a claim with Route as soon as possible. Route is our method of shipping protection, and while it is optional, we cannot guarantee any reimbursement for loss or damage. Purchasing shipping protection through Route is highly recommended.