Supra MK4 KW Variant 3 Coilover Install Guide
Supra MK4 KW V3 Coilover Installation
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Toyota Supra MK4
JZA80 (N/A)
Power
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0-60
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Top Speed
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Current Market Value
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Expert DIY
6-8 hours
KW Variant 3 Coilover Kit
Toyota Supra MK4 (JZA80)
Estimated Cost
$3,000-$3,500
Parts: $2,600-$2,900
Labor: $400-$600
Horsepower
0
Torque
0
Response
Dramatically improved turn-in, eliminates body roll, lowers CG 1.5 inches, 3-way damping adjustability
Prerequisites
- • 4-post alignment rack access
- • Corner weight scales (recommended)
- • Spring compressor
- • Toe plates or laser alignment tool
Installation Progress0%
Installation Steps
1
Measure stock ride height at each corner
10 min
Record front and rear fender-to-ground — target drop ~35mm front, 30mm rear
2
Break lug nuts, jack car onto stands
15 min
3
Remove front wheels and brake calipers
20 min
4
Remove front sway bar end links
15 min
5
Compress stock spring and remove top hat
30 min
6
Unbolt lower strut mount from lower control arm
20 min
7
Remove stock strut assembly
10 min
8
Pre-set KW coilover to factory ride height
20 min
9
Install KW front assembly
30 min
10
Repeat process for rear
2 hours
11
Set preliminary damping
10 min
12
Take to alignment shop
1 hour
Parts Required
All parts needed for this modification
KW Variant 3 3-way adjustable coilovers
Quantity: 1 • $2,650
Cusco front strut tower bar
Optional
Quantity: 1 • $220
SuperPro rear subframe bushings
Optional
Quantity: 1 • $180
Energy Suspension sway bar bushings
Quantity: 1 • $65
Tools Required
Spring compressor
Rental: $15/day
Rental
19 mm/22 mm sockets
Common
Coilover perch wrench
Common
Pickle fork (control arm)
Rental: $10/day
Rental
Supporting Modifications
Additional mods recommended or required for optimal performance
Whiteline adjustable camber arms
required
Stock arms do not allow needed camber after lowering
Polyurethane bushing set
recommended
Refresh tired rubber bushings for best coilover feel
Brake bias controller
optional
Lowering affects brake bias — adjustment ensures balance
Tuning Requirements
ECU Flash Required
Dyno Tune Required
Estimated Tuning Cost
$150-$250
Alignment MANDATORY after install. Corner balancing recommended for track use. Break-in damping settings over 500 miles before aggressive tuning.
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