8.5in Twin Disc Race Kit for Chevrolet Firebird Firehawk 1998-2002 (LS1) Includes Aluminum Flywheel
SKU: 50333319913

8.5in Twin Disc Race Kit for Chevrolet Firebird Firehawk 1998-2002 (LS1) Includes Aluminum Flywheel

Sale price$1228.50 Regular price$1365.00
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Description

8.5in Twin Disc Race Kit for Chevrolet Firebird Firehawk 1998-2002 (LS1) Includes Aluminum FlywheelAction Clutch multi disc racing clutches are designed for high performance racers who push their vehicles to the limit. The 8. 5in Twin Disc race kits feature two sintered metallic race discs, formulated in the USA, which offer superior heat capacity and a smoother engagement than any other disc on the market. It also comes with a Ventilated 6061 T6 Billet Aluminum clutch cover design to help reduce overall weight and improve throttle response which

Action Clutch multi-disc racing clutches are designed for high performance racers who push their vehicles to the limit. The 8.5in Twin Disc race kits feature two sintered metallic race discs, formulated in the USA, which offer superior heat capacity and a smoother engagement than any other disc on the market. It also comes with a Ventilated 6061-T6 Billet Aluminum clutch cover design to help reduce overall weight and improve throttle response which is paired with our high strength steel pressure and floater plate. This added clamping force won’t require twice the pedal pressure.

Action Clutch’s 8.5” Twin Disc race kits are designed to maximize performance under extreme conditions and are perfect for those looking for reliable power regardless of racing type. With added features like enhanced heat capacity and improved throttle response, these clutches will help you get off that starting line as quickly as possible and keep you running smoothly through the finish line.

At Action Clutch, every kit is quality checked by one of our experienced engineers (with over 60 years of collective experience) and signed off as safe before being released as a finished product. This gives you peace of mind knowing that your Action Clutch will perform consistently every time.

NOTE: Purchasing the wrong type of clutch kit for your specific engine power output can result in premature clutch failure, damage to the transmission and void warranty eligibility. If you’re unsure what kit is right for you, contact Action Clutch direct. Action Clutch Multi-Disc Race Kits are NOT recommended for street use and are intended for dedicated race vehicles.

950 TORQUE HOLDING CAPACITY
SPECIFICALLY ENGINEERED FOR TRACK USE APPLICATIONS ONLY

Includes Aluminum Flywheel

Specifications

Product Type 8.5in Twin Disc Race Kit
Product Weight (lbs)
SFI 1.2
 
What’s Included
  • Two (2) 8.5in American Sintered Metallic Race Discs
  • One (1) High Strength Steel Alloy Pressure Plate
  • One (1) High Strength Steel Alloy Floater Plate
  • One Piece Ventilated T6061 Billet Aluminum Clutch Cover
  • 8.5" Twin Disc specific Aluminum Lightweight Flywheel
  • Pilot Bearing / Bushing (when applicable)
  • Clutch Alignment Tool

Break-in Requirements
100 street miles / Keep RPM’s under 4500, no more than half-throttle, no boost (if applicable).
Proper break-in is required in order to retain product warranty, ensure longevity and holding capacity.

Disclaimers
Using a clutch kit with an unsprung clutch disc on a stock or lightly modified power engine that is daily/street driven vehicle can break the rivets on the clutch disc hub. Unsprung clutch kits are not designed for daily/street use or any constant on/off engagement environment. This can be compared to running a marathon in sandals vs a proper running shoe. If you were to run the marathon ins sandals, you have no cushion or comfort and can cause injuries or wear you down faster than using proper running shoes.




SFI Spec 1.2

California Residents: Prop 65 WARNING: This product MAY contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.p65warnings.ca.gov
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: 50333319913

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Amazon Customer
Los Angeles, 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
Whiting, 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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Adia
Houston, US
★★★★★ 5
My favorite underwear
Size: Medium, Color: Multicoloured C (5-pack)
Super comfortable!! They are soft and breathable. No pinching, no shifting, and relatively invisible in skirts, pants, and loose dresses. True to size. Excellent quality, holds up well. Only thing is that the wording on the front does come off after a few washes, so you have to differentiate the front from the back of the underwear by how high the seam comes up. I almost exclusively wear this underwear now, I love it!
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Reviewed in the United States on April 30, 2026
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Musicbookfan
Louisville, US
★★★★★ 5
Incredible Comfort
Size: Large, Color: Multicoloured F (5-pack)
Amazing; I’ll be ordering more. Super soft, lightweight, smooth under clothes, incredible comfort! Best underwear! I ordered these because I’m tired of underwear lines when wearing biker shorts/leggings. Other boy shorts were too long or the bottom hem too thick and both of those issues left lines around my upper leg. THESE are *just right* - perfect length and fit. No panty lines on close fitting pants, comfortable under other pants and dresses, great with jumpsuits, and fit well under slip shorts with dresses. NOTE: These take longer to dry, than similar clothes, in the dryer. No shrinking though. SIZE: I ordered these in size L and they fit perfectly. A little snug when first on but they loosened up. For reference I’m 5’4” tall, about 175#, carry my weight in my hips and backside,wear size L sweats/pajamas/loose pants, size 12 jeans.
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Reviewed in the United States on September 23, 2025
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Kathy M Gasperin
Birmingham, US
★★★★★ 5
Full coverage and full comfort
Size: XX-Large, Color: Multicoloured C (5-pack)
These boyshort underwear are a dream. They’re very soft, very stretchy, and very comfortable. They do not shrink when they’re washed. They’re heavy enough to make you feel like you have something covering you for discretion, but light enough to wear under any type of fabric. I have wide hips and I’m older so I don’t have a tight perky butt anymore. Most underwear tend to either ride up on me or become very uncomfortable. These stay where you put them. And they come all the way up to your waist so that there is no panty line whatsoever. The waist line is soft and comfortably. It does not dig in. They do not ride up and drive you crazy they stay where you put them. I would recommend them to anyone young or old. I have tried so many different styles and materials to find underwear that’s actually comfortable. These are the absolute best I have tried in five years. I just threw all the rest of them out.
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Reviewed in the United States on April 8, 2026

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