HKS Hipermax IV GT GSE21/GRS204 Full Kit
SKU: 7396258070

HKS Hipermax IV GT GSE21/GRS204 Full Kit

Sale price$697.50 Regular price$775.00
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

HKS Hipermax IV GT GSE21/GRS204 Full KitMAX IV production concept was aimed at "Comfort & Fun of steering". In normal driving, such as streets and highways, has the exquisite taste of fine and comfortable ride with HKS large bore single cylinder piston. The stock's a little stiffness is reduced and at the bump, MAX IV gives smooth and mild response. Also the steering can be set in detail for your needs by rate up for the damping. MAX IV is all length adjustable type, so that the height can

MAX IV production concept was aimed at "Comfort & Fun of steering". In normal driving, such as streets and highways, has the exquisite taste of fine and comfortable ride with HKS large bore single-cylinder piston. The stock's a little stiffness is reduced and at the bump, MAX IV gives smooth and mild response. Also the steering can be set in detail for your needs by rate up for the damping. MAX IV is all length adjustable type, so that the height can be set to your needs and wants for your style. The standard dial is both front and back at the step 15, and for smoother ride, set the step at 20 to 30. For European style suspension, set it at dial of 3 to 5 step.
and this new design makes even under 10 step dial, it will not be stiff. 
 
* We have confirmed MAX IV with HKS GT Supercharger Kit, we have checked with the power-up IS350, too.
and this new design makes even under 10 step dial, it will not be stiff. 
 
HKS has developed the MAX IV according to thorough data analysis of many cars in the market and tested them all. We didn't only rate of damping but also analyzed balance and stroke, which made this product more safe and fun to drive. We also redesigned the inner parts and developed new parts for MAX IV. MAX IV has new design of needle which gives more stable damping and steering characteristic at a low to mid speed range. We also revised dial adjustment by oil path and this new design makes even under 10 step dial, it will not be stiff. 

Application:

Engine 2GR-FSE
Model Year 05/09 - 13/04
Remarks  

Specification:

  FRONT REAR
Damping force adjustment 30 steps 30 steps
Base valve - -
Height adjustable lower bracket ? ?
Upper mount Rubber Rubber
Inverted/Normal type Normal Normal
Damper/Spring layout Coilover Coilover
Spring rate change at factory Possible Possible
Damping force adjustment with wire - ?
Helper spring
(Spring rate N/mm)
? ( 19.8 ) ? ( 19.8 )

Ride Height:

  Factory *2 Test data Adjustable range
High - Low *3
Drivable range
High - Low *4
FRONT Ride height *1 648 ? 675 ? 618 675 ? 618
Against stock -27 ? 0 ? -57 0 ? -57
REAR Ride height *1 648 ? 676 ??550??5 676 ??582
Against stock -28 ? 0 ? -126??5 0 ? -94

*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 ) 59 ( 6 )
Free height (mm) 200 250
Spring type Straight 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* 853 / 226 745 / 196
Default position of dial 15 15
Remaining damper stroke (Rebound/Damping)mm 70 / 45 72 / 83

* 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)
410 ? 428 405 380 ? 399 368
Spring
Set length(mm)
225 ? 225 240 277 ? 277 309
Length to ride hight
adjuster (mm)
87 ? 105 67 44 ? 63 0
Lever ratio 1.49 1.51

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

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 7396258070

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 558 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
J
jenny baby
Fort Morgan, US
★★★★★ 5
Clean good
I was pleasantly surprised by how easy this trimmer is to handle. The design feels lightweight in my hand, and the gray color actually looks really sleek on my counter. The blades work smoothly without pulling, and it gives a neat trim without irritation. I like that it’s simple to clean and doesn’t take up much space in my drawer. The noise level is low enough that it doesn’t feel distracting, and the on/off button is placed in a way that makes it comfortable to use. It’s a straightforward tool that does exactly what I need, and it’s made my routine a lot quicker and more convenient.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 22, 2025
S
Susan
Natrona Heights, US
★★★★★ 5
Perfect size for my travel bag
I threw this trimmer in my bag for a weekend trip. It doesn’t take up much space, and it was charged before I left. Ended up using it at the hotel, and it was super quick to set up. I just trimmed, rinsed it under the sink, and done. The battery lasted the whole trip, I didn’t even bother packing the charger. I liked that it didn’t make a mess, which is usually my issue with razors when I’m away from home. It’s small and easy to hold, I didn’t feel like I needed a whole setup to use it. Now I actually keep it in my travel bag so I don’t forget next time. For trips where space is limited, this turned out to be a good little tool to have.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 15, 2025
F
Fabian
San Leandro, US
★★★★★ 5
Quiet but Strong
The sound level surprised me. I expected a louder buzz, but it’s much quieter, which makes using it less stressful. The size is small enough to maneuver easily, but it doesn’t sacrifice strength. Even with thicker hair, it trims without pulling. That’s usually my main concern with electric tools, but this one feels secure and safe. Another thing I enjoy is how light it feels in my hand. I used it on my arms, legs, and bikini line, and I didn’t have to grip tightly. The design makes it simple to hold and move around curves without nicking the skin.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 12, 2025
T
TT
Bozeman, US
★★★★★ 5
Great Trimmer for Sensitive Areas
I’ve been really happy with this Dermave bikini trimmer. It’s compact, easy to handle, and works well on delicate areas without causing nicks or irritation. The 2 in 1 feature is great. I use the smaller head for facial touch ups and the larger one for bikini and body areas. The ceramic blade glides smoothly and feels safer than traditional razors. I like that it’s waterproof, so I can use and rinse it in the shower. The charging dock keeps it neat and charges it quickly. Battery life has been solid so far. It’s also pretty quiet, which is a bonus. Whether you’re maintaining between waxes or just prefer trimming, this is a reliable and gentle option.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 9, 2025
D
Verified Purchase
Disappointed
Houston, US
★★★★★ 5
Awesome Chromebook!
Capacity: 64GB eMMC+128GB SD Card
Awesome Chromebook! I love it!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026

recommand products