SKU: 10300037637
gear k

gear k 4 Piston K-Series Adjustable Cam Gears – 4 Piston Racing

Sale price$21.35 Regular price$23.72
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 26 - Oct 1

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Description

gear k 4 Piston K-Series Adjustable Cam Gears – 4 Piston Racing4 Piston K Series Cam Gears are THE highest quality gears on the market, with an innovative design to help you during the cam degree process. Not only can they be used in the same manner as a traditional cam gear, they also feature alignment holes with an alignment tool that allows you to move it an exact number of degrees, put the pin in to align it, then tighten the bolts. If you want to advance 2 degrees, move the gear 2 on the face, slide the pin

4 Piston K-Series Cam Gears are THE highest quality gears on the market, with an innovative design to help you during the cam degree process. Not only can they be used in the same manner as a traditional cam gear, they also feature alignment holes with an alignment tool that allows you to move it an exact number of degrees, put the pin in to align it, then tighten the bolts. If you want to advance 2 degrees, move the gear 2 on the face, slide the pin in, and it will move exactly 2 degrees.

Not only does this save you time during the cam degree process, you can also offer your customers different settings for their cam centerlines with simple instructions to move to a specific pin location, slide the alignment pin in, and tighten the gears down. It removes any margin of human error and ensures that they get their valve timing events exactly where you asked them to be.

Why are 4P Gears Better?

  • ARP fasteners that are larger for increased holding strength
  • 175 grams lighter than competitive offerings, but with stronger materials and design
  • Innovative cam degree system where the markings actually mean something
  • MADE IN THE USA, with USA Billet Steel
  • Available as a Single -or- as a Pair
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: 10300037637

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4.3 ★★★★★
Based on 12 reviews
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Skurtzo
Alexandria, US
★★★★★ 4
A little snug on the thighs
Size: Medium, Color: Multicoloured G (5-pack)
Super comfy, soft and thin. For reference, I'm 5'6", 135, athletic build. I bought medium. I almost returned them because I thought they were a bit too snug on my thighs, and my thighs are not large at all. I was concerned about panty lines under snug clothing. But, because they're thin, I figured they would probably stretch, so I kept them. So far, I've only worn them under a night shirt, but they're super comfortable and they dont ride up at all. Very nice, but if your thighs are a little thick, you probably won't like them.
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Reviewed in the United States on August 29, 2025
S
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Shanna
Lowell, US
★★★★★ 5
Functional + Sexy
Size: Small, Color: Multicoloured E-(5-pack), Size: Small, Color: Multicoloured E-(5-pack)
Not only do these feel good, my husband can’t keep his hands off me. They fit so good and are soft. I change into these to sleep but also just use them as shorts to wear around the house. They’re comfortable and don’t slide around. I got a size small and I’m 100lbs.
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Reviewed in the United States on April 13, 2026
C
Verified Purchase
ClairY
Draper, US
★★★★★ 5
Finally!
Size: X-Large, Color: All Black D (5-pack)
Finally, comfortable underwear that don’t end up giving me a wedgie. I have a round booty and most cuts of underwear end up shifting as I walk and sit. The hem of the underwear comes right under my cheeks and the lightweight material ensures there’s no panty line and no shifting to where I don’t want them! I’m definitely purchasing more.
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Reviewed in the United States on May 17, 2026
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Verified Purchase
Amazon Customer
Battle Creek, US
★★★★★ 3
Ehh
Size: Medium, Color: Multicoloured E-(5-pack)
Very thin, still comfy but very thin material. Super soft though. I've worn and washed and they have held up but I won't be repurchasing bc these are so thin
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Reviewed in the United States on April 14, 2026
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Grma4m&m
Chelsea, US
★★★★★ 5
They’re fantastic!!!!
Size: X-Large, Color: Multicoloured E-(5-pack)
My clothing size is 16/18 and XL. Even though Amazon suggested a size XXL, I ordered my normal XL and they fit perfectly. The fabric for this style is 92% bamboo viscose and is amazingly soft and almost silky feeling. I had ordered a different boy short in this brand but they were 80% bamboo viscose and the fabric was significantly heavier. I returned those and ordered these.
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Reviewed in the United States on April 25, 2026

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