BC Racing Coilovers - Chevrolet Sonic (12+) [T300]

BC Racing Coilovers Chevrolet Sonic replace the standard dampers and springs with an adjustable, rebuildable setup. Chassis code T300. Fits 12+ cars. Default spring rates are front 6 kg/mm / rear 3 kg/mm. Ride height is set on the lower bracket rather than by compressing the spring. That keeps spring preload and ride height as two separate adjustments. BC Racing Coilovers Chevrolet Sonic specification Vehicle Chevrolet Sonic (12+) Chassis code T300 Manufacturer Chevrolet Brand BC Racing Default spring rates Front: 6 kg/mm / Rear: 3 kg/mm SKU BCR-Q-08 Available kit configurations Configurations can use different damper designs and mounting arrangements. Check the selected kit code. The kit code is the BC Racing part number for that build. Configuration Kit code Top mount BR Series - RN: No front top mount / rubber rear Q-08-BR-RN no front top mount supplied, rubber at the rear Which series for the Chevrolet Sonic? BR Series gives you 30-way damping adjustment and full height adjustment independent of spring preload. Spring rates and what is in the box This kit ships at 6 kg/mm front and 3 kg/mm rear. The rates are matched front to rear for a balanced setup on the road. Rates are chosen by BC Racing per application, so they suit a fast road and occasional track car as supplied. If the car is built for something more specific, a track car or a car carrying a lot of aero, the rates can be changed without replacing the dampers. The kit covers all four corners and includes the dampers, springs, lower brackets, locking collars and the adjuster spanners. Top mounts depend on the configuration you pick from the table above. Anything that is worn on the car already, drop links, bushes, top mount bearings, is worth checking while the suspension is apart. Fitting and setting up BC Racing Coilovers Chevrolet Sonic Work on a flat floor, set the height on the lower brackets, then roll the car forward and back to settle everything before you take a final measurement. Alignment comes after the height is set, not before. Start with the settings in the instructions supplied for your exact kit. Adjust in small steps and change only the front or only the rear at a time, otherwise you cannot tell which change did what. The kit is rebuildable and the springs are a standard ID, so a rate change later is a spring swap rather than a new set of coilovers. Worth reading if you are new to this: how a coilover works and why height and preload are separate adjustments. BC Racing Coilovers Chevrolet Sonic questions Will BC Racing Coilovers Chevrolet Sonic fit without modification? The kit is cut to the Chevrolet Sonic damper and strut dimensions and uses the standard mounting points on the T300 chassis. Check the listed fitting requirements for this application before installation. How low will the Chevrolet Sonic go on these? Height is adjustable across the full range of the lower bracket. How low you can usefully run depends on your wheel and tyre size and how the car is used, so set it to suit how the car is actually used. What spring rates do BC Racing Coilovers Chevrolet Sonic come with? Front: 6 kg/mm / Rear: 3 kg/mm as standard. The springs are a standard ID, so rates can be changed later without replacing the dampers. Do I need an alignment afterwards? Yes. Camber and toe both move as the car comes down, so book the alignment once the ride height is set and the suspension has settled. Are these road legal? Adjustable suspension is legal for road use in the UK. Keep the ride height sensible, make sure nothing fouls at full lock or full compression, and tell your insurer the car has been modified. Not sure which top mount option you need? Send us the reg and how the car gets used and we will confirm the BC Racing Coilovers Chevrolet Sonic spec. More from this range: BC Racing coilovers . Other Chevrolet kits: Chevrolet Corvette (Pillowball Bottom Mount Bush) , Chevrolet Camaro Ss (W/ Mrc) (RWD) , Chevrolet Bolt EV (FWD) .