Swift Spec-R Lowering Springs - BMW M3/M4 (G80/G82/G83)

OVERVIEW

Swift's Spec-R line goes a step beyond standard Sport Springs, designed at the upper limits of OEM shock valving for drivers who want to take their G80 M3 or G82/G83 M4 to the track without sacrificing street comfort. Built with Swift's proprietary H5S.TW material and a manufacturing process using fewer coils, these springs eliminate coil-bind risk while maximizing usable shock stroke.

SPECS

• Spring rate: Front 5.6 kg/mm / Rear 13.5 kg/mm
• Lowering: Front -1.3" / Rear -1.0"
• Designed and tested to work with factory shocks/dampers
• Fewer coils than competing springs — reduces unsprung mass and eliminates coil-bind risk
• Proprietary H5S.TW material for quicker transient response and a smoother ride over rough surfaces
• Track tested and proven in HPDE and SCCA competition

PARTS INCLUDED

• Full set of 4 Swift Spec-R lowering springs

TECH RESOURCES

• Designed and tested to work with the factory shocks/dampers — no shock replacement required

PART NUMBER

• 4X930R

VEHICLE APPLICATIONS