HKS Hipermax S Coilover Full Kit - Mazda RX-7 (FD3S) 1991-2002

Upright monotube dampers are used at both ends with 30 steps of damping force adjustment, matched to a rear biased 10.0 kgf/mm front and 11.0 kgf/mm rear spring pairing that suits the light front end of the FD3S. A rear helper spring keeps the springs seated at full extension, and full-length shock body adjustment gives 1 mm to 36 mm of front drop and up to 67 mm of rear drop against stock ride height. Reinforced rubber upper mounts are fitted front and rear. Dual PVS valving, Advanced Bump Rubber and PNE corrosion-resistant plating are standard, and HKS covers the whole 13B-REW production run with one part number.

Specifications

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy