MAX IV GT Spec-A
LEGACY B4
LEGACY B4 BMM

MAX IV GT Spec-A

Code No. 80230-AF004V

*Discontinued.

Ultimate Street Damper with Latest Theory Based on MAX IV GT

 

 

The model in the photo is BR9.

 

 

Application

Engine FB25(NA)
Model Year 12/05 - 14/10
Remarks  

Specification

  FRONT REAR
Damping force adjustment 30 steps 30 steps
Base valve - -
Height adjustable lower bracket
Upper mount Rubber Rubber
Inverted/Normal type Inverted Normal
Damper/Spring layout Coilover Coilover
Spring rate change at factory Possible Possible
Damping force adjustment with wire - -
Helper spring
(Spring rate N/mm)
- -
Ride Height mm
  Factory *2 Test data Adjustable range
High - Low *3
Drivable range
High - Low *4
FRONT Ride height *1 667 687 ~ 658 687 ~ 662
Against stock -51 -31 ~ -60 -31 ~ -56
REAR Ride height *1 670 713 ~ 657 713 ~ 662
Against stock -43 0 ~ -56 0 ~ -51

*1. Height from road surface to fender arch.
*2. Height at factory is the data tested at HKS with the setting of Full Kit. (HKS' recommended setting.)
*3. Adjustable range (However, the lowest value may not be road legal.
Even within the adjustable range, car body, arm etc. may contact. In such case, it will be hard to drive.
Damper oil leakage or any other problems caused by low ride height setting from the factory setting will void the warranty of the product.)
*4. Drivable range that there is no contact of car body or arms etc. (However, change of tire/wheel size may cause a problem.)
Caution). Actual data depends on each vehicle.


Kit information

Spring of Full Kit

  F R
Spring rate N/mm(kgf/mm) 49+19~ ( 5+2~=7~ ) 39+19~ ( 4+2~=6~ )
Free height (mm) 250 250
Spring type Straight Barrel type Straight
Recommended range to change spring rate N/mm(kgf/mm) ±20 ( 2 ) ±20 ( 2 )

Specification of damper

  F R
Damping force (Rebound/Damping)N* 900 / 450 400 / 300
Default position of dial 15 15
Remaining damper stroke (Rebound/Damping)mm 72 / 54 ( 4 ) 72 / 54 ( 4 )

* The value of the damping force is at piston speed of 0.1m/sec.

Setting data

  F R
Default Test Drivable limit
High *
Drivable limit
Low *
Default Test Drivable limit
High *
Drivable limit
Low *
Length of
case (mm)
322 341 317 250 283 244
Spring
Set length(mm)
242 250
Length to ride hight
adjuster (mm)
97 116 92 23 56 17
Lever ratio 1.07 1.30

* Refer to the above explanation *3 of ride height information for drivable high and low limitations.



Test vehicle information

  F R
Vehicle weight kg 911 (900) 669 (650)
Tire size (Air pressure) kPa 245 / 35 - 19 ( 270 ) 245 / 35 - 19 ( 260 )
Wheel size 8.0 JJ × 19 off 48 8.0 JJ × 19 off 48
Alignment
(Toe/Camber)
Test data 0 mm / -0°48' 0 mm / -1°36'
Standard value 0 ± 3 mm / -0°15' ± 45' 0 ± 3 mm / -1°00' ± 45'

* Test data at HKS.


Parts List  * It may be changed without prior notice.

 


Point

"Ultimate Street Damper" developed under supervision by rally driver Mr. Toshihiro Arai. The stroke is extended to 13mm in front and 26mm in rear, and the bump rubbers act as 2kgf/mm sub-springs so the handling and road holding performance are much better than expected. The supple and tractable stroke creates persistent and stable grip and adequate load shift
The best handling dial position Rally driver Mr. Toshihiro Arai selected at the time of testing at Gunsai is 15 for the front and 00 for the rear.
The value within the parenthesis under the stroke section is the stroke length to the bump rubber.  (Actual value may be different.)
The vehicle height data from other than the test is computational data. (The numbers does not guaranteeing the height)
 
 
 
 
 
 
 



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