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- USA
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Ships within 48 hours · Estimated delivery Jul 15 - Jul 20
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Description
GSC P-D Subaru EJ257 w/Dual AVCS S1 Cams 266/264 BilletExperience peak performance with the GSC Power Division Billet S1 Camshaft Kits, designed specifically for the Subaru EJ257 engine with Dual AVCS technology. These high quality cams are precision crafted to deliver enhanced valve timing and superior durability, pushing your engine's capabilities while maintaining smooth operation throughout the rev range. The S1 cams feature a 266 264 profile that optimizes horsepower and torque for spirited driving
Experience peak performance with the GSC Power Division Billet S1 Camshaft Kits, designed specifically for the Subaru EJ257 engine with Dual AVCS technology. These high-quality cams are precision-crafted to deliver enhanced valve timing and superior durability, pushing your engine's capabilities while maintaining smooth operation throughout the rev range.The S1 cams feature a 266/264 profile that optimizes horsepower and torque for spirited driving and motorsport applications alike. Made from billet material, these cams ensure long-lasting strength and resistance to wear, making them an excellent upgrade for enthusiasts seeking reliability alongside performance.
Installation is straightforward for those familiar with engine modifications, and the kit's design maintains compatibility with the advanced variable valve timing system in your Subaru. Whether you are tuning for track days or spirited street performance, these cams are engineered to unlock your engine's true potential.
Trusted by tuners and workshops across Europe, GSC Power Division remains a benchmark in engine components with a commitment to quality and performance. Upgrade your EJ257 engine today with the GSC Billet S1 Camshaft Kit and feel the difference in power and responsiveness.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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]
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4.4 ★★★★★
Based on 1699 reviews
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Product Reviews
★★★★★ 5
Nice Fit
Color: Black, White, Light Gray, Size: 3X-Large
I picked this up looking for something simple but clean, and it delivered. The fit is comfortable, the material feels solid, and it looks good without needing much effort. It’s one of those pieces you can throw on and still look put together.
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Reviewed in the United States on March 29, 2026
★★★★★ 4
Good value, soft and comfortable
Color: Black, Army Green, Light Gray, Size: 4X-Large, Color: Black, Army Green, Light Gray, Size: 4X-Large
Initial thoughts are very positive with this 3 pack shirt set. The green is similar to an OD military green and the black and gray are standard color shades. Material is soft and sizes are true to size. The mock turtleneck isn’t too tight but may still be a little annoying to some people. I do question the amount of spandex in these shirts. Tag says 5% but these shirts are extremely stretchy and feels like a higher spandex content. It’s also a little tough to figure out which way is the front of the shirt. Visually rhe front does have a lower collar line than the back but would still be nice to have a brand tag printed in the back of the shirt for quicker identification.
Overall for roughly $12 a shirt these are a good choice for everyday wear. I will update rating if these shirts fail to meet expectations after further use.
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Reviewed in the United States on April 8, 2025
★★★★★ 5
👍🏻
Color: Black, Army Green, Light Gray, Size: 5X-Large
Weirdly thick material, I wasn’t a fan but it’s a good sleep shirt
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Just what I wanted.
Color: Black, Navy Blue, Wine Red, Size: 5X-Large
These may have just become my standard shirt to wear. Feels good whether tucked or out. Drapes well and fits well. So far, I can see it adjust to the different undershirt I may wear. Will probably order another set in other colors and a back up set of the basics because they will get worn a lot.
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Reviewed in the United States on July 17, 2025
★★★★★ 3
Its alright
Color: Black, Size: 5X-Large
True to size per the size chart. The fabric is soft but it it feels cheap to me. It attracts lint but you can brush it off easily so its not the cheapest material I've dealt with. Also, it is opaque (not see through).
There is no front/ back indicator either which is indicative of a cheap shirt in my opinion. Would be friendly for tag sensitive people (to stay positive).
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Reviewed in the United States on April 14, 2026
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