HKS

SKU:80230-AT025A

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SKU: 80230-AT025A

HKS Hipermax IV GT Spec20 Toyota Yaris GR

	Code No. 80230-AT025A

▲The above photo is an item for GXPA16.

An updated MAX IV GT with improved handling and comfort, an ulimate street suspension.

Application		Specification
Engine G16E-GTS Model Year 20/09 -  Remarks Developed in RZ High performance 1st edition		FRONT REAR Damping force adjustment 30 steps 30 steps Base valve - - Height adjustable lower bracket 〇 〇 Upper mount Stock Rubber Inverted/Normal type Inverted Normal Damper/Spring layout Coilover Separated 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 *1 654 ← 679 ～ 634 679 ～ 634 Against stock -25 ← 0 ～ -45 0 ～ -45 REAR Ride height *1 651 ← 677 ～　630 677 ～　630 Against stock -26 ← 0 ～ -47 0 ～ -47

*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) 69 ( 7.0 ) 59 ( 6.0 ) Free height (mm) 200 250 Spring type Straight Barrel type Straight Barrel type Recommended range to change spring rate N/mm(kgf/mm) +10 ( 1 ) ※ +10 ( 1 ) ※

Specification of damper

F R Damping force (Rebound/Damping)N* 603 / 490 363 / 452 Default position of dial 15 15 Remaining damper stroke (Rebound/Damping)mm 45 / 61 49 / 65

* 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) 301 ← 326 281 273 ← 290 255 Spring Set length(mm) 203 ← 203 203 - - - - Length to ride hight adjuster (mm) 20 ← 45 0 40 ← 58 25 Lever ratio 1.02 1.42(spg) , 1.32(dmp)

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

Test vehicle information

F R Vehicle weight kg 773 515 Tire size (Air pressure) kPa 225 / 40 - 18 ( 220 ) 225 / 40 - 18 ( 200 ) Wheel size 8.0 JJ × 18 inset 45 8.0 JJ × 18 inset 45 Alignment (Toe/Camber) Test data in 0 mm / -3°00' out 2 mm / -2°11' Standard value in 1.8 ± 2.0 mm / -1°23' ± 0°45' in 2.2 ± 2.0 mm / -1°55' ± 0°45'

* Test data at HKS.

Parts List * It may be changed without prior notice.

Point

The ride comfort required for daily use and sports performance such as stability has been improved in a well-balanced tune without losing stock comfortability Pursue a drivability at the specification setting, We could create suspension that the car movement easier to understand and allows the driver to have better control. Testing various spring rates resulted in a suspension with a spring rate of F = 69 Nm (7 kg)/R = 59 Nm (6 kg) and a spring length of F = 200 mm (series barrel type)/R = 250 mm (series barrel type) that was suitable for a wide range of users Increase high rates springs are required for use in hill climbs and mini truck or use with high grip tires (ex Yokohama A052). When the spring rate is changed, the spring length is automatically changed to F = 170 mm/R = 220 mm. The recommended dial for damping force when rate-up is F: D = 15/R: D = 13. When considering a circuit attack, it is recommended to swing the rear suspension's toe angle to out. Understeer becomes less to come out, and you can get on the gas pedal earlier when you stand up from the corner. Control range of understeer and oversteer are also improved.