The RS coilover system is a 36 way damper and rebound adjustable monotube full coilover system. The setup has seperate height and preload adjustments allowing for optimal adjustment and allowing full strut travel at all times along with pillowball upper mounts or top mounts*.

Mounts are constructed of 6061 powder coated aluminum. Threads are teflon coated to prevent rust.

Rebuildable and serviceable in Australia.

ALL G4 COIL OVER SETS ARE ONLY $1399! 1 YEAR REPLACEMENT WARRANTY ON SHOCK INSERTS WHEN FITTED AND SET UP BY OPTION1GARAGE

Over 190+ different models to choose from!

G4 Suspension System currently comes in FOUR different models for your applications:

• Track Model
• Street Model
• D1 Drift Model
• Rally Model

DETAIL:

• All shock absorbers are gas and oil separately (30% Nitrogen and 70% Oil) monotube design that can reduce the oil leaking defects.
• The dampners can be disassembled and rebuilt to meet all requirements.
• The shock absorber also includes high-performance front pillow ball top mount (McPherson type) to complete this unique product.
• Our shock absorbers are made by lightweight 6061 aluminum alloy material and have done with T6 for increasing hardness, and forming by forging and anodized to avoid losing colour.
• All models can be lowered to 120mm than the original height when the shock absorber is fitted.
• Linear rate spring with chrome silicon metal alloy springs, available from 3.5-22kg/mm.
• Top turning adjuster to adjust damper and rebound up to 36 ways. All shock absorbers are flexible for both compression and rebound.
• Teflon thread coated to prevent rust and corrosion. Our shock absorbers are qualified by “World ARTC” for million circles with no liquid leakage, qualified as race proven equipments.

HSD Suspension

HSD coilovers, manufactured in Korea, offer outstanding performance at extremely competitive prices. With vast experience producing coilovers for Japanese OEM clients, HSD’s own brand offers the same quality of design and components as the most expensive brands on the market. This is backed up by a 12-month warranty against any manufacturing defect.

HS Series $1349 - $1399

For the driver who only occasionally ventures to the circuit, our HS series coilovers offer a comfortable, quiet ride while still delivering improved handling and easy height adjustment. The revised HS series features only slightly smaller dampers (38mm piston) than the HR and HT, with lighter damping rates and lighter springs better suited to daily driving. Damping adjustments are made using a single 15-step dial. Most models have been redesigned to offer longer travel, with helper springs used where necessary. To reduce noise the top mounts feature a rubber bush rather than a pillow-ball. Strut suspension models still offer camber adjustment via elongated holes in the base bracket.

HR Series $1599 - $1649

Our very popular HR series is perfect for race and drift use, offering great control and adjustability at an affordable price. Featuring a larger daimater damper (44mm piston) with stiffer valving and 15-step damper adjustment, they also have stiffer spring rates than the HS series. These can still be used for regular driving, but the stiff, short-stroke design is biased more toward the circuit. All HR models feature pillow-ball top mounts front and rear, with camber adjustment on strut suspension models. The dampers are also inverted on strut models for greater strength.

HT Series $2399 - $2449

New for 2007, the HT series is designed specifically for race use. Featuring a remote reservoir for all four dampers, control is improved even under sustained, high-load use. Effectively doubling the volume of oil in each damper, the remote reservoir system also improves cooling and allows the HT dampers to have separate bump and rebound adjustment. There are four ‘coarse’ steps of bump adjustment, with 12 steps of finer adjustment effectively offering 48 steps of bump adjustment. Rebound adjustment also has 16 steps to choose from, with up to 5000N of damping force available.
To minimise unsprung weight, the HT series also offers a full aluminium damper casing and aluminium lower bracket. Naturally all HT models feature pillow-ball top mounts front and rear, with camber adjustment on strut suspension models. Coilovers offering this level of sophistication normally retail for more than double the recommended retail of our HT type.

Rate conversion chart

3kg/mm (168lb/in) 4kg/mm (224lb/in) 5kg/mm (280lb/in) 6kg/mm (336lb/in) 7kg/mm (392lb/in) 8kg/mm (448lb/in) 9kg/mm (504lb/in) 10kg/mm (560lb/in) 11kg/mm (616lb/in) 12kg/mm (672lb/in) 14kg/mm (784lb/in) 15kg/mm (840lb/in) 16kg/mm (896lb/in) 17kg/mm (952lb/in)