HSD MonoPro Coilovers BMW 3 Series F34 Gran Turismo 5-Bolt Camber Top Mount

HSD MonoPro Coilovers for BMW 3 Series F34 Gran Turismo (15-20) with Camber Top Mounts – 16-Way Monotube Damping, Height & Camber Adjustable

HSD MonoPro is the performance range from HSD, and this kit is made specifically for the BMW 3 Series F34 Gran Turismo. Each corner uses a high gas-pressure monotube damper, which runs cooler and stays more consistent than a twin-tube design when the car is driven hard for long periods – ideal for fast road use, track days and drifting.

On cars with MacPherson strut front suspension the MonoPro uses an inverted damper design for extra strength under cornering and braking loads, and a low-friction damper coating helps the suspension react to small inputs. The 16-way damping adjuster lets you go from a softer road setting to a firmer track setting in a few clicks. Ride height is set by screwing the damper body up or down, separately from spring preload, so you can lower the car without losing suspension travel or changing how the spring behaves. Front camber is adjustable, which helps you get the most from your tyres once the car is lowered.

The latest Version 2 front lower brackets have the anti-roll bar drop link mount built in, so fitting is simpler than on earlier kits. This is the 5-bolt camber top mount version, made for cars with the later 5-bolt front top mount (it also suits the rare M8 3-bolt mount). This is the Default spring rate kit (8kg front, 10kg rear), the best choice for road cars and occasional track days. A stiffer Track Pack is listed separately.

Specifications

• Damper type: high gas-pressure monotube
• Damping adjustment: 16-way, soft to hard
• Spring pack: Default
• Front spring: 8kg/mm (approx. 78 N/mm), 175mm long, 65mm ID
• Rear spring: 10kg/mm (approx. 98 N/mm), 200mm long, 65mm ID
• Adjustment: Height, Damping and Front Camber
• Front top mounts: HSD camber-adjustable, for 5-bolt (and rare M8 3-bolt) fitment
• HSD part number: HSD8-MP-BM17-5

Key Features

• 16-way adjustable high gas-pressure monotube dampers for consistent performance when driven hard
• Inverted damper design on strut front suspension and low-friction damper coating
• Full-length height adjustment, separate from spring preload
• Front camber adjustment to dial in alignment once lowered
• 6061 aluminium top mounts and spring seat collars
• Zinc-plated damper bodies with e-coated lower mounts and full-length dust boots for corrosion protection
• Version 2 front brackets with built-in anti-roll bar drop link mount
• Rear adjuster takes 200mm coilover springs for easy spring rate changes from 6kg to 20kg
• Designed as a bolt-on kit for this car, with spares and rebuild support through the UK distributor

What's in the Kit?

• 4 x HSD MonoPro coilovers
• Front camber-adjustable top mounts (fitted to the front coilovers)
• Shorter front anti-roll bar drop links
• 2 x C-spanners for height and preload adjustment
• 1 x set of fitting instructions
• 2 x HSD stickers

Please note: the HSD feature graphics in the gallery are illustrations of the range; the coilovers supplied are specific to this car.

Fitment

• BMW 3 Series F34 Gran Turismo (2015-2020)
• Cars with the 5-bolt front top mount, also suits the rare M8 3-bolt top mount - check your car before ordering
• Engines/models: 316i, 318i, 320i, 328i, 330i, 335i, 340i, 316d, 318d, 320d, 325d, 330d, 335d

Not suitable for: Cars with the M10 3-bolt top mount (use the 3-bolt camber version).

Installation

The kit is a direct replacement for the standard dampers and springs on the BMW 3 Series F34 Gran Turismo, using the factory mounting points with no cutting or drilling. Fit the shorter anti-roll bar drop links supplied to the integrated mount on the front brackets. Set an even ride height side to side using the body adjustment rather than the preload collars, tighten every lock ring, then have a full four-wheel alignment done, including camber. Check the ride height and that all bolts and lock rings are tight again after the first few hundred miles. We recommend professional fitting by a garage with spring compressors and alignment equipment.

Should I choose the Default or Track Pack springs?

Choose Default for road use and occasional track days. The Track Pack's stiffer springs reduce body roll and suit regular track use or very low ride heights, but the ride is firmer. This listing is the Default kit.

Does this kit fit my car?

HSD lists this kit for the BMW 3 Series F34 Gran Turismo (2015-2020). Not suitable for: cars with the M10 3-bolt top mount (use the 3-bolt camber version).

How do I know if my car has a 3-bolt or 5-bolt top mount?

Open the bonnet and count the bolts holding each front strut top mount to the turret. Early cars use three bolts (most are M10), later cars use five. If you have the rare M8 3-bolt mount, choose the 5-bolt version.

Are MonoPro coilovers too firm for daily driving?

No. With the Default springs and a softer damper setting the MonoPro rides well on the road, and you can firm up the damping for track days. The Track Pack is noticeably firmer.

Can I lower the car without changing the spring preload?

Yes. HSD coilovers adjust ride height by screwing the damper body in its lower mount, separately from the spring preload collar, so you keep the same spring behaviour and damper travel.

Do I need a wheel alignment after fitting?

Yes. Changing ride height alters toe and camber, so a full four-wheel alignment is needed after fitting and after any big height change.

Are these coilovers road legal?

Yes, they are designed for road use. Lowering is a modification, so tell your insurer, and keep enough ground clearance and suspension travel for UK roads.

What warranty do HSD coilovers have?

HSD coilovers are covered by a 12-month warranty against defects in materials and workmanship. Spare parts, springs and rebuild support are available through the UK distributor.