
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 4 - Jul 9
For Your Every Summer RSVP, with Code: SUMMER15
Description
Fabspeed GT420 Sport Performance Package - Porsche 981 Boxster Spyder | Cayman GT4Fabspeed's GT420 Sport Performance Package is the premium solution to adding performance to your GT4 Spyder on the street. Delivering over 400 horsepower to the crank with easy to install bolt on upgrades, there is no better option for the GT4 owner seeking maximum power and performance while retaining catalysts. No need to swap engines or suffer long periods of downtime during a full engine re build. Simply install the Fabspeed GT420 Package and
Fabspeed's GT420 Sport Performance Package is the premium solution to adding performance to your GT4 / Spyder on the street. Delivering over 400 horsepower to the crank with easy-to-install bolt-on upgrades, there is no better option for the GT4 owner seeking maximum power and performance while retaining catalysts. No need to swap engines or suffer long periods of downtime during a full engine re-build. Simply install the Fabspeed GT420 Package and begin outperforming the 911 Carrera GTS the very next day!
Kit Includes:
- Porsche Cayman GT4 Valvetronic Exhaust System
- Porsche Cayman GT4 Sport Headers
- Porsche Cayman GT4 IPD Competition Plenum Package
- Porsche Cayman GT4 BMC F1 Replacement Air Filters
- Porsche Cayman GT4 Cobb Accessport Tuner with GT420 Tune
Features:
- Fits all Porsche 981 Cayman GT4 / Boxster Spyder models (2015-2016)
- Instantly eliminates all symptoms of Carrera envy
- Side effects may include extreme euphoria and uncontrollable excitement. In some cases, users have experienced acceleration-induced tunnel vision
- Fabspeed's GT420 Street Performance Package added over 44 whp and 48 ft/lbs of low-end torque at 4283 RPM on a Spyder.
- Peak power was raised by 25 whp and 17 ft/lbs of torque - leaving the building with 363 whp and 316 ft/lbs of torque.
- Choose between real matte Carbon Fiber tips or Single Wall Stainless Tips that are made in house for a racecar look
- All parts are easily installed with no cutting or welding required, bolt on and go
- The Cobb Accessport gives you easy control over tuning your GT4 or Boxster Spyder, we send all documentation for uploading the GT450 flash to your vehicle upon purchasing
- All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty
- INSTALLATION NOTE: To ensure proper header seal, after initial heat cycle, tighten all exhaust bolts to the OEM torque specs.
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]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 732 reviews
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Product Reviews
★★★★★ 5
Good work pants
Color: Dark Brown, Size: 46W x 32L
run small / snug I would recommend getting next size up minimum.
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Reviewed in the United States on May 18, 2026
★★★★★ 5
Durable and great fit
Color: Black, Size: 32W x 34L
Great fit and quality, nice color, this are a work pants, pretty durable and they haven’t fade, also they don’t shrink or wrinkle
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Reviewed in the United States on April 15, 2026
★★★★★ 4
Run small, size it up
Color: Mushroom, Size: 32W x 30L, Color: Mushroom, Size: 32W x 30L
They go small, Im 5'8", 165lbs, usually 32x30 fits just rigth in most brands Levis, Izod, whatever, can't even close the zipper on this one, my dingus prints in the front if I manage to close it, I will try a 34 or even 36, if you want one, size it up. Length is right.
Anyway, the pant is good, sturdy looking material, is not soft but nothing uncomfortable probably gets right after break it in, reinforced stitches on pockets. I think they would work great for a technician, salesman or an engineer, those jobs where you have to look like a human being with a polo shirt but sometimes needs to do something without ripping your pants while crouching or for daily abuse of the regular Joe, will try another that fits
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Best Value For The Money
Color: Black, Size: 36W x 32L
My grandson uses these for work. Well-made and durable. Worth the price. Fit is comfortable.
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Reviewed in the United States on April 13, 2026
★★★★★ 5
Good, but size up!
Color: Black, Size: 30W x 29L
These are exactly what I wanted, but as many have stated, you need to size up. I found that going up two sizes (from my usual 28 to a 30) made for a great fit. I love that they come in a 29 length. One anything point is they came with creases in them from being folded in the package for a length of time. I had to steam and press them before wearing. I’ll likely buy them in other colors.
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Reviewed in the United States on March 18, 2026
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