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XIDA Race Coilover 90-05 Miata MX5
Features
Single adjustable Compression & Rebound together, 20 step. Full clockwise is full stiff.
Length is optimized for 4~5″ pinch weld heights
Full aluminum monotube construction
46mm double digressive piston
Floating piston internal design
Adjustable height spring perches
Torrington thrust bearings
120mm stroke front, 103mm rear
High Pressure nitrogen charged
Spherical bearing lower mounts
2.25″ Swift or Hyperco springs
Total weight with springs and mounts: 8 lbs front, 7 lbs rear (light!)
Damping sweep for front 1300~450 springs, rear 600~250
Options:
Dual spring system – Includes Torrington bearings and spring couplers
CNC machined billet aluminum spherical bearing, coaxial perch mounts
Why dual springs? Being a long stroke damper, Xidas require dual springs to make full use of the extra stroke available. A 2000 lb car with the motion ratio of just under 1.5:1 won’t compress a short 700# spring far enough to allow meaningful droop travel with long stroke damper. To get the correct ride height, one must lower the preload collar until the springs have 25-60mm of free play. Without the secondary springs (helper), there is no spring stroke left to push the tire down to remain in contact with the road.
Spring rates
22k/11k (1232/616) Hoosier 225/45 ~ 275/35/15
16k/9k (896/504) Race – Track or autocross focused, 40~100tw race or 200tw UHP
14k/7k (784/392) STS – STS autocross class only
12k/7k (672/392) Sport – For high grip street tires, 200tw. Casual autocross or HPDE
10k/6k (560/336) Touring – Street comfort, not for 200tw or race tires.
Features
Single adjustable Compression & Rebound together, 20 step. Full clockwise is full stiff.
Length is optimized for 4~5″ pinch weld heights
Full aluminum monotube construction
46mm double digressive piston
Floating piston internal design
Adjustable height spring perches
Torrington thrust bearings
120mm stroke front, 103mm rear
High Pressure nitrogen charged
Spherical bearing lower mounts
2.25″ Swift or Hyperco springs
Total weight with springs and mounts: 8 lbs front, 7 lbs rear (light!)
Damping sweep for front 1300~450 springs, rear 600~250
Options:
Dual spring system – Includes Torrington bearings and spring couplers
CNC machined billet aluminum spherical bearing, coaxial perch mounts
Why dual springs? Being a long stroke damper, Xidas require dual springs to make full use of the extra stroke available. A 2000 lb car with the motion ratio of just under 1.5:1 won’t compress a short 700# spring far enough to allow meaningful droop travel with long stroke damper. To get the correct ride height, one must lower the preload collar until the springs have 25-60mm of free play. Without the secondary springs (helper), there is no spring stroke left to push the tire down to remain in contact with the road.
Spring rates
22k/11k (1232/616) Hoosier 225/45 ~ 275/35/15
16k/9k (896/504) Race – Track or autocross focused, 40~100tw race or 200tw UHP
14k/7k (784/392) STS – STS autocross class only
12k/7k (672/392) Sport – For high grip street tires, 200tw. Casual autocross or HPDE
10k/6k (560/336) Touring – Street comfort, not for 200tw or race tires.