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Page 1 A to I
Most of the listed coil-overs are designed to fit the Z34 370Z. The G37 chassis uses the same suspension components so vendors often cross-list the Z devices to the G, often with no change in spring rate. Stock G springs are ~1kg/mm stiffer than stock Z springs due to weight difference.
Per post on MyG37.com, coupe OE rates are 8.5k/8.2k. Don’t know if these rates are for base coupe or Sport. Front/rear ratio is thus 1.037:1. IPL coupe OE rates are 9.5k/8.2k, so ratio is 1.11:1 See note 2 for explanation of front: rear ratio significance.
[1]Separate height adjustment is better. Without it, changing spring perch height affects spring preload and damper rod position in the shock body, potentially taking it out of normal damping range.
[2] Front/rear frequency ratio should not be 1:1 as this promotes a hobbyhorse effect when hitting bumps. Don’t have frequency data so have to infer from spring rates.
[3] Spring diameter is helpful if you wish to change spring rates.
[4] Aluminum bodies to reduce weight. Half this weight is sprung, the other half unsprung.
[5] Heaviest part of shock is attached to vehicle instead of hub. Unsprung weight is the same for calculation purposes but mass accelerated over bumps is lower.
1 kg/mm = 55.8 lb/in
Brand: Apexi
Model: S1
P/N: 268-AN057
Type: OEM
Body type: Monotube
Upper mount: Rubber
Separate hgt adjust [1]: Yes
Damping type:
Damping adjust (F/R): 20/20
Rate (F/R), kg/mm: 12k/10k
Front/rear ratio [2 ]: 1.2:1
Spring diameter, mm[3]:
Rebuildable: Yes
Warranty (yr):
Note: Not on Apexi web site as of October 2015
Brand: Aragosta
Model: Comfort Type S
P/N: NI-A1-000
Type: OEM
Body type: Monotube
Upper mount: Pillowball
Separate hgt adjust: Yes
Damping type:
Damping adjust (F/R):
Rate (F/R), kg/mm: 15k/7k
Front/rear ratio: 2.143
Spring diameter, mm:
Rebuildable: Yes
Warranty (yr):
Note: Aluminum body; Japanese dampers that can be rebuilt by Moton in USA; coupe rates are 12k/10k
Brand: Aragosta
Model: Comfort Type E
P/N: NI-E1-000
Type: OEM
Body type: Monotube
Upper mount: Pillowball
Separate hgt adjust: Yes
Damping type:
Damping adjust (F/R):
Rate (F/R), kg/mm: 15k/7k
Front/rear ratio: 2.143
Spring diameter, mm:
Rebuildable: Yes
Warranty (yr):
Note: Steel body; Japanese dampers that can be rebuilt by Moton in USA; coupe rates are 12k/10k
Brand: Aragosta
Model: Comfort Type E
P/N: NI-E1-R00
Type: OEM
Body type: Monotube
Upper mount: Rubber
Separate hgt adjust: Yes
Damping type:
Damping adjust (F/R):
Rate (F/R), kg/mm: 15k/7k
Front/rear ratio: 2.143
Spring diameter, mm:
Rebuildable: Yes
Warranty (yr):
Note: Steel body; Japanese dampers that can be rebuilt by Moton in USA; coupe rates are 12k/10k
Brand: AST
Model: AST 3-Way 5300
P/N:
Type: True-type
Body type: Monotube
Upper mount: Pillowball
Separate hgt adjust: Yes
Damping type: Digressive
Damping adjust (F/R):
Rate (F/R), kg/mm: Custom
Front/rear ratio:
Spring diameter, mm:
Rebuildable: Yes
Warranty (yr):
Note: Adjustable rebound, low and high speed compression; external reservoir; double digressive piston available
Brand: BC Racing
Model: V-02
P/N: V-02
Type: OEM
Body type:
Upper mount: Rubber
Separate hgt adjust: Yes
Damping type:
Damping adjust (F/R): 30/30
Rate (F/R) kg/mm: 12k/10k
Front/rear ratio: 1.2:1
Spring diameter, mm:
Rebuildable: Yes
Warranty (yr): 1
Note: Pillowball upper mount optional
Brand: BC Racing
Model: Type BR
P/N: V-02-BR-BC
Type: OEM
Body type: Monotube
Upper mount: Pillowball
Separate hgt adjust: Yes
Damping type: Linear
Damping adjust (F/R): 30/30
Rate (F/R) kg/mm: 12k/10k (Coupe and sedan, AWD rates 10k/8k)
Front/rear ratio: 1.2:1
Spring diameter, mm:
Rebuildable: Yes
Warranty (yr): 1
Note: Single adjustable; Swift springs and custom rates available
Brand: BC Racing
Model: Type ER
P/N: V-02-ER-BC
Type: OEM
Body type: Monotube
Upper mount: Pillowball
Separate hgt adjust: Yes
Damping type:
Damping adjust (F/R): Comp 30/Reb 30
Rate (F/R) kg/mm: 12k/10k
Front/rear ratio: 1.2:1
Spring diameter, mm:
Rebuildable: Yes
Warranty (yr): 1
Note: Double adjustable; Swift springs and custom rates available, valved to match custom springs
Brand: BC Racing
Model: Type ZR
P/N: V-02-ZR-BC
Type: True
Body type: Monotube
Upper mount: Pillowball
Separate hgt adjust: Yes
Damping type:
Damping adjust (F/R): Comp low 15/Comp hi 12/Reb 30
Rate (F/R) kg/mm: 12k/10k
Front/rear ratio: 1.2:1
Spring diameter, mm:
Rebuildable: Yes
Warranty (yr): 1
Note: Triple adjustable w/ remote reservoir; Swift springs and custom rates available, valved to match custom springs
Brand: Bilstein
Model: PSS10
P/N: 48-165815 B16
Type: OEM
Body type: Monotube
Upper mount: Rubber
Separate hgt adjust: No
Damping type:
Damping adjust (F/R): 10/10
Rate (F/R) 340/515 lb/in: Progressive
Front/rear ratio:
Spring diameter, mm:
Rebuildable:
Warranty (yr): 1
Note: Fat Cat Motorsports can modify for custom spring rates and damping behavior. Normally loses adjustability.
Brand: Broadway Static
Model: 500S
P/N:
Type: choice of OE or true-type
Body type: Monotube
Upper mount: Rubber, pillowball optional
Separate hgt adjust: Yes
Damping type: Digressive
Damping adjust (F/R): 32/32
Rate (F/R) kg/mm: custom
Front/rear ratio: custom
Spring diameter, mm: 60
Rebuildable: Yes
Warranty (yr): 1
Note: Customized Fortune Auto single-adjustable dampers, upgradeable to double-adjust w/ external reservoir
Brand: Broadway Static
Model: 510RS
P/N:
Type: choice of OE or true-type
Body type: Monotube
Upper mount: Rubber, pillowball optional
Separate hgt adjust: Yes
Damping type: Digressive
Damping adjust (F/R): 24/24 fr, 24/24 rr
Rate (F/R) kg/mm: custom
Front/rear ratio: custom
Spring diameter, mm: 60
Rebuildable: Yes
Warranty (yr): 1
Note: Customized Fortune Auto double-adjustable dampers. Upgradeable to external reservoir
Brand: Broadway Static
Model: 520R
P/N:
Type: choice of OE or true-type
Body type: Monotube
Upper mount: Rubber, pillowball optional
Separate hgt adjust: Yes
Damping type: Digressive
Damping adjust (F/R): 24/24 fr, 24/24 rr
Rate (F/R) kg/mm: custom
Front/rear ratio: custom
Spring diameter, mm: 60
Rebuildable: Yes
Warranty (yr): 1
Note: Customized Fortune Auto double-adjustable dampers w/ external reservoir. Aimed at track use.
Brand: CXRacing
Model:
P/N: CO-370Z-09-1210
Type: OEM
Body type: Monotube
Upper mount: Rubber
Separate hgt adjust: Yes
Damping type:
Damping adjust (F/R): 32/32
Rate (F/R) kg/mm: 12k/10k
Front/rear ratio: 1.2:1
Spring diameter, mm:
Rebuildable:
Warranty (yr): 1
Note: Coupe only? "Professional" installation or warranty is void.
Brand: D2 Racing
Model: RS
P/N: D-NI-04
Type:
Body type: Monotube
Upper mount: Pillowball
Separate hgt adjust: Yes
Damping type:
Damping adjust (F/R): 36/36
Rate (F/R) kg/mm:
Front/rear ratio:
Spring diameter, mm:
Rebuildable:
Warranty (yr):
Note:
Brand: Feal
Model: 441
P/N: 441NI-04
Type: True type
Body type: Monotube
Upper mount: Pillowball
Separate hgt adjust: Yes
Damping type: Digressive
Damping adjust (F/R): 30/30
Rate (F/R) kg/mm: 12/5
Front/rear ratio: 2.4:1
Spring diameter, mm:
Rebuildable: yes
Warranty (yr):
Note:2-way, 3-way, long-travel, drag options. Swift springs
Brand: HKS
Model: Hipermax III Sport
P/N: 80155-AN012
Type: OEM
Damping type:
Body type: Monotube
Upper mount:
Separate hgt adjust: yes
Damping adjust (F/R):
Rate (F/R) kg/mm: 14k/16k
Front/rear ratio: 0.875:1
Spring diameter, mm: 65
Rebuildable:
Warranty (yr): 1
Note: Discontinued
Brand: HKS
Model: Hipermax IV GT
P/N: 80230-AN004
Type: OEM
Body type: Inverted monotube
Upper mount: Rubber
Separate hgt adjust: yes
Damping type:
Damping adjust (F/R): 30/30
Rate (F/R) kg/mm: 10k/9k
Front/rear ratio: 1.111
Spring diameter, mm:
Rebuildable:
Warranty (yr):
Note: listed as Skyline KV-36 http://www.hks-power.co.jp/en/produc...t/433/type/49/
Page 2 J to R
Brand: JDM Sport
Model: ADJUSTABLE SUSPENSION DAMPER COILOVER SYSTEM
P/N: 131-1033-841-S3
Type:
Body type: Monotube
Upper mount: Pillowball
Separate hgt adjust:
Damping type:
Damping adjust (F/R): 32/32
Rate (F/R) kg/mm:
Front/rear ratio:
Spring diameter, mm:
Rebuildable:
Warranty (yr): “yes”
Note: “Made in the same factory as Megan and BC”
Brand: JRZ
Model: RS1
P/N:
Type:
Body type: Monotube
Upper mount:
Separate hgt adjust:
Damping type:
Damping adjust (F/R): 24/24
Rate (F/R) kg/mm:
Front/rear ratio:
Spring diameter, mm:
Rebuildable:
Warranty (yr):
Note: Single-adjustable that affects both rebound and compression; Z34 application
Page 2 K thru Z
Brand: Ksport
Model: Kontrol Pro Coilovers
P/N: CIN020-KP
Type:
Body type: Monotube
Upper mount: Pillowball
Separate hgt adjust: No
Damping type:
Damping adjust (F/R): 36/36
Rate (F/R) kg/mm: 12K/6.3K
Front/rear ratio: 1.905:1
Spring diameter, mm:
Rebuildable: Yes
Warranty (yr): 1
Note:
Brand: Ksport
Model: Version RR Coil-overs
P/N: CIN020-RR
Type:
Body type: Monotube
Upper mount: Pillowball
Separate hgt adjust: No
Damping type:
Damping adjust (F/R): 36/36
Rate (F/R) kg/mm: 20K/14K
Front/rear ratio: 1.429:1
Spring diameter, mm:
Rebuildable: Yes
Warranty (yr): 1
Note: Track application
Brand: KW
P Model: V1 Coilover Kit
P/N: 10285007
Type: OEM
Body type: Twin tube
Upper mount: Rubber
Separate hgt adjust: No
Damping type:
Damping adjust (F/R): 0/0
Rate (F/R) kg/mm: Progressive
Front/rear ratio:
Spring diameter, mm:
Rebuildable:
Warranty (yr):
Note: Coupe only?
Brand: KW
P/N: 35285007
Model: V3 Coilover Kit
Type: OEM
Body type: Twin tube
Upper mount: Rubber
Separate hgt adjust: No
Damping type:
Damping adjust (F/R): Compression 12/Rebound 16 front & rear
Rate (F/R) kg/mm: Progressive
Front/rear ratio:
Spring diameter, mm:
Rebuildable:
Warranty (yr):
Note: Low-speed compression/rebound adjusters; Sedan requires KW rear spring spacer which voids warranty
Brand: M7
Model: M7 SUPER STREET PERFORMANCE DAMPER
P/N: SSPD-9
Type: OEM
Body type: Monotube
Upper mount: Pillowball
Separate hgt adjust: Yes
Damping type:
Damping adjust (F/R): 35/35
Rate (F/R) kg/mm:
Front/rear ratio:
Spring diameter, mm:
Rebuildable:
Warranty (yr): 2
Note: Only Z34 chassis listed but there are at least two coupe installations so it should fit sedan.
Brand: Megan Racing
Model: Spec-RS Coilover System
P/N: MR-CDK-Z34-RS
Type: OEM
Body type: Twin tube
Upper mount: Pillowball
Separate hgt adjust: Yes
Damping type:
Damping adjust (F/R): 32/32
Rate (F/R) kg/mm: 12k/10k
Front/rear ratio: 1.2:1
Spring diameter, mm: 62
Rebuildable:
Warranty (yr): 1
Note: External reservoir w/ compression adjuster; ±2kg/mm spring rate range before revalve is necessary
Brand: MeisterR
Model: ZetaCRD
P/N: MD30S-V36
Type:
Body type: monotube
Upper mount: aluminum top hat with hard rubber bushing
Separate hgt adjust: yes
Damping type:
Damping adjust (F/R): 18/18
Rate (F/R) kg/mm: 10/8
Front/rear ratio: 1.2
Spring diameter, mm:
Rebuildable:
Warranty (yr):
Note: single-adjustable
Brand: Motion Control Suspension (MCS)
Model: 1-Way Non-Remote
P/N:
Type:
Body type: Monotube
Upper mount:
Separate hgt adjust:
Damping type:
Damping adjust (F/R): 18/18
Rate (F/R) kg/mm:
Front/rear ratio:
Spring diameter, mm:
Rebuildable:
Warranty (yr):
Note: Z34 application
Brand: Motion Control Suspension (MCS)
Model: 2-Way Non-Remote
P/N:
Type:
Body type: Monotube
Upper mount:
Separate hgt adjust:
Damping type:
Damping adjust (F/R): Comp 15/Reb 15
Rate (F/R) kg/mm:
Front/rear ratio:
Spring diameter, mm:
Rebuildable:
Warranty (yr):
Note: Z34 application
Brand: Motion Control Suspension (MCS)
Model: 2-Way Remote
P/N:
Type:
Body type: Monotube
Upper mount:
Separate hgt adjust:
Damping type:
Damping adjust (F/R):
Rate (F/R) kg/mm:
Front/rear ratio:
Spring diameter, mm:
Rebuildable:
Warranty (yr):
Note: Z34 application
Brand: Motion Control Suspension (MCS)
Model: 3-Way Remote
P/N:
Type:
Body type: Monotube
Upper mount:
Separate hgt adjust:
Damping type:
Damping adjust (F/R):
Rate (F/R) kg/mm:
Front/rear ratio:
Spring diameter, mm:
Rebuildable:
Warranty (yr):
Note: External reservoir; Z34 application
Brand: Powertrix
Model: SS Sport Street Coilover Set
P/N: SSCONISZ34G37
Type: OEM
Body type: Monotube
Upper mount: Rubber
Separate hgt adjust: Yes
Damping type:
Damping adjust (F/R): 15/15
Rate (F/R) kg/mm: 12k/10k
Front/rear ratio: 1.2:1
Spring diameter, mm:
Rebuildable:
Warranty (yr):
Note: ±2kg/mm spring rate range before revalve is necessary; custom spring rates available
Brand: Powertrix
Model: RT Road/Track Coilover Set
P/N: RTCONISZ34G37
Type: OEM
Body type: Monotube
Upper mount: Pillowball
Separate hgt adjust: Yes
Damping type:
Damping adjust (F/R): 15/15
Rate (F/R) kg/mm: 13k/11k
Front/rear ratio: 1.182:1
Spring diameter, mm:
Rebuildable: Yes
Warranty (yr):
Note: ±2kg/mm spring rate range before revalve is necessary; custom spring rates available
Brand: Powertrix
Model: Ultra-Lite Road/Track Coilover Set
P/N: ULRTCONISZ34G37
Type: OEM
Body type: Monotube
Upper mount: Pillowball
Separate hgt adjust: Yes
Damping type:
Damping adjust (F/R): 15/15
Rate (F/R) kg/mm: 13k/11k
Front/rear ratio: 1.182:1
Spring diameter, mm:
Rebuildable: Yes
Warranty (yr):
Note: ±2kg/mm spring rate range before revalve necessary; custom spring rates available; aluminum body[4]
Brand: RS-R
Model: Black-I Coilovers
P/N: XBKN120M
Type: OEM
Body type:
Upper mount: Rubber
Separate hgt adjust: Yes
Damping type:
Damping adjust (F/R):
Rate (F/R), kg/mm: 16k/13.5k
Front/rear ratio: 1.185:1
Spring diameter, mm:
Rebuildable:
Warranty (yr):
Note: Meant for deep drop
Brand: RS-R
Model: Sports-I Coilovers
P/N: XLIN120M
Type: OEM
Body type:
Upper mount:
Separate hgt adjust: No
Damping type:
Damping adjust (F/R):
Rate (F/R) kg/mm: 7k/6k
Front/rear ratio: 1.167:1
Spring diameter, mm:
Rebuildable:
Warranty (yr): Note:
Last edited by slartibartfast; 01-13-2018 at 04:57 PM.
Brand: Stance
P/N: ST-Z34-SSO
Model: Super Sport Coilover Kit OEM Type
Type: OEM
Body type: Inverted monotube [5]
Upper mount:
Separate hgt adjust: Yes
Damping type:
Damping adjust (F/R): 15/15
Rate (F/R) kg/mm: 12k/11k
Front/rear ratio: 1.091:1
Spring diameter, mm:
Rebuildable:
Warranty (yr):
Note: Discontinued?
Brand: Stance
P/N: ST-Z34-PC2
Model: Pro Comp2
Type: True type
Body type: Monotube
Upper mount: Pillowball
Separate hgt adjust: Yes
Damping type:
Damping adjust (F/R): 15/15
Rate (F/R) kg/mm: 16k/10k
Front/rear ratio: 1.6:1
Spring diameter, mm:
Rebuildable:
Warranty (yr):
Note: Remote reservoir, 2-way adjustable
Brand: Stance
P/N: ST-Z34-PC3
Model: Pro Comp3
Type: True type
Body type: Monotube
Upper mount: Pillowball
Separate hgt adjust: Yes
Damping type:
Damping adjust (F/R): 15/15
Rate (F/R) kg/mm: 13k/8k
Front/rear ratio: 1.625:1
Spring diameter, mm:
Rebuildable:
Warranty (yr):
Note: Remote reservoir, 3-way adjustable? No data on Stance web page.
Brand: Tanabe
P/N: TSR130
Model: Sustec Pro Comfort-R Coilovers
Type: OEM
Body type: Twin tube
Upper mount: Rubber
Separate hgt adjust: No
Damping type:
Damping adjust (F/R): 0/0
Rate (F/R) kg/mm: 10k/9k
Front/rear ratio: 1.111:1
Spring diameter, mm:
Rebuildable:
Warranty (yr):
Note: KYB damper core
Brand: Tein
Model: SuperStreet-P Coilovers
P/N: DSP92-2UAS4
Type: OEM
Body type: Twin tube
Upper mount: Pillowball
Separate hgt adjust: No
Damping type:
Damping adjust (F/R):
Rate (F/R) kg/mm: 9k/8k
Front/rear ratio: 1.125:1
Spring diameter, mm:
Rebuildable: Yes
Warranty (yr):
Note: Compatible with Electronic Damping Force Controller (EDFC)
Brand: Tein
Model: Street Basis Coilovers
P/N: GSP92-1UAS2
Type: OEM
Body type: Twin tube
Upper mount: Rubber
Separate hgt adjust: No
Damping type:
Damping adjust (F/R): 0/0
Rate (F/R) kg/mm: 9k/8k
Front/rear ratio: 1.125:1
Spring diameter, mm:
Rebuildable: Yes
Warranty (yr):
Note: Discontinued? Not on Tein’s web site
Brand: Tein
Model: Street Basis Z Coilovers
P/N:
Type: OEM
Body type: Twin tube
Upper mount: Rubber
Separate hgt adjust: No
Damping type:
Damping adjust (F/R): 0/0
Rate (F/R) kg/mm: 9k/8k
Front/rear ratio: 1.125:1
Spring diameter, mm:
Rebuildable: Yes
Warranty (yr):
Note: Discontinued? Not on Tein’s web site
Brand: Tein
Model: Mono Sport
P/N: GSP92-71AS3
Type: OEM
Body type: Monotube
Upper mount: Rubber
Separate hgt adjust: Yes
Damping type: Linear
Damping adjust (F/R): 16/16
Rate (F/R) kg/mm: 12k/10k
Front/rear ratio: 1.2:1
Spring diameter, mm:
Rebuildable: Yes
Warranty (yr): 1
Note:
Brand: Top Speed
Model: Pro-1 Street Spec Adjustable True Coilover Kit
P/N: CN-SA-370Z
Type: True type
Body type:
Upper mount:
Separate hgt adjust: Yes
Damping type:
Damping adjust (F/R):
Rate (F/R) kg/mm: 12k/10k
Front/rear ratio: 1.2:1
Spring diameter, mm:
Rebuildable:
Warranty (yr):
Note: Not on Top Speed web site as of October 2015, found in MyG37 Classified forums
Last edited by slartibartfast; 06-01-2016 at 02:30 PM.
Just for completeness sake, I think you can add MCS and JRZ to the list.
Curious on the note on AST's...
- I don't think AST is Japanese product?
- I understand AST and Moton merged, or AST bought Moton, whichever it is.
- Did you mean that Japanese Aragosta dampers can be rebuilt by AST USA, since they share some AST internals?
I'm going by what Ape Factory wrote in his Choosing the right coil-over thread regarding the Aragosta rebuild. I do believe I cutted and pasted rong abow the AST. Wot a dumazz.
Dang, I meant to add JRZ! Didn't know about MCS. Thanks!
05-24-2016, 02:14 PM
