SKU: 31630559813

9PSI - 11PSI BOOST PULLEY UPGRADE KIT WITH BELT TO SUIT HOLDEN L67 SUPERCHARGED V6

Sale price$76.50 Regular price$85.00
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Description

9PSI - 11PSI BOOST PULLEY UPGRADE KIT WITH BELT TO SUIT HOLDEN L67 SUPERCHARGED V6INCLUDES FREE LOAN OF THE PULLEY REMOVAL INSTALLATION TOOL ($195 bond required which is fully refundable when the tool is returned in satisfactory condition) Our Mace L67 supercharger boost upgrade kit comprises of a special modular hub, pulley size of your choice from 3. 5" (9 PSI) to 3. 3" (11 PSI), new belt and a free loan of our factory pulley removal installation tool (additional $160 refundable bond required). Our boost upgrade kits are a cost

INCLUDES FREE LOAN OF THE PULLEY REMOVAL/INSTALLATION TOOL

($195 bond required which is fully refundable when the tool is returned in satisfactory condition)

 

Our Mace L67 supercharger boost upgrade kit comprises of a special modular hub, pulley size of your choice from 3.5" (9 PSI) to 3.3" (11 PSI), new belt and a free loan of our factory pulley removal/installation tool (additional $160 refundable bond required).

Our boost upgrade kits are a cost effective way to bump up the performance of your factory supercharged V6 Commodore by increasing boost pressure.

Unlike some other supercharger pulley kits on the market, our pulleys are made from aircraft grade aluminium, which have been hard anodized so they won't break or wear out.

Vehicle Fitment Guide

 

The best part about this performance upgrade is that at the very most it takes about an hour to do! There is no need for removing superchargers, replacing gaskets, and spending unnecessary time and money to achieve our results. In addition, once our special hub is in place, changing of pulleys literally becomes a 10 minute job such that you can now easily swap from a 10 PSI pulley to a smaller or larger one of your choice (tune and different belt length may be required depending on size).

As shown in the below dyno graph, we had the 10 PSI boost upgrade kit fitted to one of our customers' VT L67 Commodore which already had a full exhaust and cold air intake and it made an outstanding 146.8 KW at the rear wheels. An increase of 15kw from stock with no tune in sight! Just goes to show how much Holden really watered down the performance of these engines.

Greater power gains can be achieved if further mods are undertaken such as an intercooler, larger cam, etc.

 

 

Caution: We do not recommend fitting a pulley smaller than 3.4" (10PSI) on a stock supercharged V6. Excessive boost pressure may induce knock and potential engine damage. A physically smaller pulley can only be used when the motor is intercooled, cammed and dyno tuned or has a combination of all 3. 98 Octane fuel must be used when installing an aftermarket supercharger pulley.

 

Please contact us if you have any questions or concerns regarding this warning.

Parts Guide

 

Notes:

  • The return postage of the tool is the responsibility of the customer.
  • 3.8" (6 PSI) to 2.42" (20 PSI) Boost pulley upgrade kit without belt can be purchased through another listing.
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: 31630559813

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Ashley Herron
Chelsea, US
★★★★★ 5
Good use of stuffed animal storage
Great bean bag sleeve. I used it to collect all of my daughters old stuffed animals.
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Reviewed in the United States on May 26, 2026
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Dollface
Grantham, US
★★★★★ 5
My Fav Reading Spot 💕
Color: Leopard Print Pink, Size: Large(38"x38"x40"), Color: Leopard Print Pink, Size: Large(38"x38"x40")
Love it! So cute, soft, & cozy. I filled mine with extra comforters, clothes, & fabric i had laying around
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Reviewed in the United States on April 10, 2026
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Summer Prickett
Whiting, US
★★★★★ 5
💕 LOVE
I almost didn't purchase because I was nervous about the shedding. To my surprise the quality is fantastic. Minimal shedding and soooo soft! The size is perfect for a TON of stuffed animals along with blankets. Good bang for your buck!! Makes organization a breeze!! It is very durable when needing to move!
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Reviewed in the United States on June 1, 2026
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Victoria Allen
Belleville, US
★★★★★ 1
Too expensive to rip within hours
Color: Leopard Print Brown, Size: Large(38"x38"x40")
The handle ripped off while carrying, which left a giant hole on the top. The beanbag was in no way overstuffed or heavy. Not worth the money.
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Reviewed in the United States on May 6, 2026
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Margo
Lowell, US
★★★★★ 4
Overall good
Color: Leopard Print Pink, Size: Large(38"x38"x40")
It is super cute, I was nervous about the pattern and color because it’s not something I usually go for. But because the fabric is also long faux hairs it’s more of a ridged obre. The handle isn’t as strong as they recommend filling it to. So I recommend bear hugging it to move it around. You can put a lot in it if you want a harder chair but I filled it 3/4 full. The size is a little smaller so it’s more a medium.
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Reviewed in the United States on May 7, 2025

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