Dinan 21-27 BMW M3/M4 (G80/G82/G83) Adjustable Coil-Over Suspension System

Dinan's design retains the superb factory electronic shocks but swaps the springs to a more aggressive, performance enhancing formula and implements threaded collars that allow the user to change the ride height themselves. While shorter, stiffer springs are commonplace in aftermarket suspensions and are a key element in reduction of body roll it is not a one size fits all approach. In the case of the G8x M3/M4 where the vehicle has a penchant for oversteer, stiffening the rear springs would exacerbate the problem of the rear losing traction before the front when the platform is pushed to the limit. Dinan instead has opted to soften the rear spring rate as well as switch from the factory progressive rate rear to a dual rate spring setup. The combination increases predictability and compliancy, and in turn, provides better rear grip/road holding for a vehicle that needs both. The result is a sleek lowered stance that provides improved handling to go along with its stunning visual appearance. The springs combined with progressive bump stops and other components increase travel that allow the car to be lowered up to 1-1/8" in the front and 2-1/4" inches the rear. However, to retain the ride quality synonymous with Dinan suspension kits the recommended drop of 3/4" (M4) or 7/8" (M3) in front and 3/4" in the rear is advised. For suspension connoisseurs, or those that are just simply very particular, suspension packers are included to fine-tune handling and comfort by changing the clearance of the progressive bump-stops --- something no respectable race car is without. G80/G82/G83

• Up to 1" of lowering in front and 2-1/4" of lowering in back are possible depending on tire clearance but with diminished ride quality
• Components are machined from 6061-T6 aluminum and black anodized for a sporty appearance as well as corrosion protection
• Dinan recommends a 3/4" (M4) to 7/8" (M3) drop in front and a 3/4" drop in the rear to maintain a civilized ride
• Spring rates are 15% stiffer in front and 10% softer in the rear for increased predictability and compliancy
• Included suspension packers allow adjustment of bump-stop clearance to fine-tune handling and comfort
• Stock upper spring mounts are utilized as well as spring isolators for quiet operation
• Threaded collars allow easy and precise front & rear vehicle height adjustments
• Dinan-spec progressive bump stops improve ride quality at lowered ride heights
• Up to 1/2" of lift in front and 1-1/4" in back over stock is also possible
• Substantial reduction in body roll

Upgrade your BMW M3 or M4 with the Dinan D190-8210 adjustable coil-over suspension system, designed specifically for 2021-2023 models. This system retains the factory electronic shocks while replacing the springs with performance-enhanced, adjustable components that allow for precise ride height customization. The threaded collars enable drivers to easily adjust the ride height, providing a personalized balance between aggressive stance and ride comfort. Crafted from durable 6061-T6 aluminum and finished with a sleek black anodized coating, these components offer both a sporty appearance and corrosion resistance.

Dinan's suspension kit features springs that are 15% stiffer in the front and 10% softer in the rear compared to stock, enhancing predictability and compliance on the road. The dual-rate rear springs, combined with progressive bump stops, improve rear grip and road holding, especially during aggressive driving. The system allows for up to 1 inch of lift or 1-1/4 inches of lowering, although the recommended drop is 3/4 inch in the front and rear to maintain a civilized ride quality. Fine-tuning is possible via included suspension packers, which adjust bump-stop clearance for handling and comfort preferences.

This suspension upgrade offers a substantial reduction in body roll and improved handling dynamics, making it ideal for enthusiasts seeking performance without sacrificing ride quality. The use of stock upper spring mounts and isolators ensures quiet operation, while the adjustable features enable drivers to customize their vehicle’s stance and feel. Whether for street use or spirited driving, the Dinan coil-over system provides a premium, versatile upgrade that enhances both the aesthetic and performance characteristics of your G80/G82/G83 M3/M4 BMW models.

Features:

• Adjustable ride height with threaded collars for precise customization

• Spring rates are 15% stiffer in front and 10% softer in rear for improved handling

• Constructed from durable 6061-T6 aluminum with black anodized finish for corrosion resistance

• Includes suspension packers for fine-tuning bump-stop clearance and handling

• Allows up to 1 inch of lift or 1-1/4 inches of lowering with recommended settings

• Reduces body roll for enhanced stability during aggressive driving

• Compatible with 2021-2023 BMW M3 and M4 models (G80/G82/G83)

• Utilizes factory upper spring mounts and spring isolators for quiet operation

• Progressive bump stops improve ride quality at lowered heights

• Easy-to-use threaded collars for quick height adjustments

Fitments:
2021 BMW M3 Base
2021 BMW M3 Competition
2021 BMW M4 Base
2021 BMW M4 Competition
2022 BMW M3 Base
2022 BMW M3 Competition
2022 BMW M3 Competition xDrive
2022 BMW M4 Base
2022 BMW M4 Competition
2022 BMW M4 Competition xDrive
2023 BMW M3 Base
2023 BMW M3 Competition
2023 BMW M3 Competition xDrive
2023 BMW M4 Base
2023 BMW M4 Competition
2023 BMW M4 Competition xDrive
2023 BMW M4 CSL
2024 BMW M3 Base
2024 BMW M3 Competition
2024 BMW M3 Competition xDrive
2024 BMW M4 Base
2024 BMW M4 Competition
2024 BMW M4 Competition xDrive
2025 BMW M3 Base
2025 BMW M3 Competition
2025 BMW M3 Competition xDrive
2025 BMW M4 Base
2025 BMW M4 Competition
2025 BMW M4 Competition xDrive
2026 BMW M3 Base
2026 BMW M3 Competition
2026 BMW M3 Competition xDrive
2026 BMW M4 Base
2026 BMW M4 Competition
2026 BMW M4 Competition xDrive

Air Freight Prohibited: false
Not Carb Approved: false
Carb Acknowledgement Required: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Units Per Sku: 1
Regular Stock: t