SKU: 31996078613

Comp Cams CS 312R-8 .900 BASE CIRCLE

Sale price$255.01 Regular price$283.34
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Ships within 48 hours · Estimated delivery Aug 13 - Aug 18

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For Your Every Summer RSVP, with Code: SUMMER15

Description

Comp Cams CS 312R-8 .900 BASE CIRCLEMECHANICAL ROLLER 400 cu. in. and up, good heads, high comp. . 900 base circle. Vehicle Fitments: Year Make Model Submodel 1995 1996 AM General Hummer Base 1980 1991 Avanti II Base 1985 Avanti II GT 1980 Buick Century Sport, Limited, Base, Estate 1991 1996 Buick Commercial Chassis Base 1980 Buick Regal Sport, Base, Limited 1992 1995 Buick Roadmaster Base, Limited 1991 1995 Buick Roadmaster Estate Wagon 1996 Buick Roadmaster Limited Collector's

MECHANICAL ROLLER-400 cu.in. and up, good heads, high comp. .900 base circle.



Vehicle Fitments:

Year Make Model Submodel
1995 - 1996 AM General Hummer Base
1980 - 1991 Avanti II Base
1985 Avanti II GT
1980 Buick Century Sport, Limited, Base, Estate
1991 - 1996 Buick Commercial Chassis Base
1980 Buick Regal Sport, Base, Limited
1992 - 1995 Buick Roadmaster Base, Limited
1991 - 1995 Buick Roadmaster Estate Wagon
1996 Buick Roadmaster Limited Collector's Edition, Estate Wagon Collector's Edition, Collector's Edition
1990 - 1992 Cadillac Brougham d'Elegance, Base
1992 - 1996 Cadillac Commercial Chassis Brougham, Base
1993 - 1996 Cadillac Fleetwood Base, Brougham
1980 - 1982 Checker Marathon Deluxe, Base
1994 Chevrolet Blazer Base, Silverado Sport
1992 - 1993 Chevrolet Blazer Cheyenne
1987 Chevrolet Blazer Custom Deluxe
1991 - 1994 Chevrolet Blazer Nevada
1988 - 1991 Chevrolet Blazer Scottsdale
1987 - 1994 Chevrolet Blazer Silverado
1980 Chevrolet C10 Big Ten, Custom Deluxe
1980 - 1981 Chevrolet C10 Cheyenne
1980 - 1986 Chevrolet C10 Custom, Silverado, Scottsdale
1981 Chevrolet C10 Deluxe
1981 - 1986 Chevrolet C10 Suburban Custom
1980 Chevrolet C10 Suburban Custom Deluxe
1981 Chevrolet C10 Suburban Deluxe
1980 - 1986 Chevrolet C10 Suburban Scottsdale, Silverado
1990 - 1993 Chevrolet C1500 454 SS
1989 - 1995 Chevrolet C1500 Base
1988 - 1992 Chevrolet C1500 Scottsdale
1988 - 1995 Chevrolet C1500 Silverado, Cheyenne
1990 - 1995 Chevrolet C1500 WT
1992 - 1995 Chevrolet C1500 Suburban Base
1995 Chevrolet C1500 Suburban LS, LT
1992 - 1994 Chevrolet C1500 Suburban Silverado
1986 Chevrolet C20 Base
1980 - 1986 Chevrolet C20 Cheyenne, Scottsdale, Silverado
1981 - 1986 Chevrolet C20 Custom
1980 Chevrolet C20 Custom Deluxe
1981 Chevrolet C20 Deluxe
1981 - 1986 Chevrolet C20 Suburban Custom
1980 Chevrolet C20 Suburban Custom Deluxe
1981 Chevrolet C20 Suburban Deluxe
1980 - 1986 Chevrolet C20 Suburban Scottsdale, Silverado
1988 - 1995 Chevrolet C2500 Cheyenne, Silverado, Base
1993 Chevrolet C2500 Custom, 400 SS
1988 - 1992 Chevrolet C2500 Scottsdale
1994 - 1995 Chevrolet C2500 WT
1992 - 1995 Chevrolet C2500 Suburban Base
1995 Chevrolet C2500 Suburban LS, LT
1992 - 1994 Chevrolet C2500 Suburban Silverado
1980 - 1982 Chevrolet C30 Base
1980 - 1981 Chevrolet C30 Cheyenne
1981 - 1986 Chevrolet C30 Custom
1980 Chevrolet C30 Custom Deluxe
1981 Chevrolet C30 Deluxe
1980 - 1986 Chevrolet C30 Scottsdale, Silverado
1994 - 1995 Chevrolet C3500 Base
1988 - 1992 Chevrolet C3500 Scottsdale
1988 - 1995 Chevrolet C3500 Silverado, Cheyenne
1985 - 1986 Chevrolet Camaro Iroc-Z
1980 Chevrolet Camaro Rally Sport, Base
1981 - 1986 Chevrolet Camaro Sport
1982 Chevrolet Camaro Z28 Indianapolis 500 Pace Car
1980 - 1986 Chevrolet Camaro Z28, Berlinetta
1980 - 1992 Chevrolet Caprice Base
1980 - 1996 Chevrolet Caprice Classic
1986 - 1990 Chevrolet Caprice Classic Brougham
1981 - 1982 Chevrolet Caprice Classic Estate
1980 - 1981 Chevrolet Caprice Classic Landau
1993 - 1994 Chevrolet Caprice Classic LS
1987 - 1990 Chevrolet Caprice Classic LS Brougham
1991 - 1993 Chevrolet Caprice Classic LTZ
1980 Chevrolet Caprice Classic Sport
1991 - 1994 Chevrolet Commercial Chassis Base
1980 - 1986 Chevrolet Corvette Base
1982 Chevrolet Corvette Collector's Edition
1986 Chevrolet Corvette Indianapolis 500 Pace Car
1981 - 1986 Chevrolet El Camino Conquista
1980 - 1981 Chevrolet El Camino Royal Knight
1980 - 1987 Chevrolet El Camino SS, Base
1996 Chevrolet Express 2500 Base, LS
1983 Chevrolet G10 Base
1981 - 1987 Chevrolet G10 Bonaventure
1980 - 1995 Chevrolet G10 Sportvan, Chevy Van, Beauville
1995 Chevrolet G20 Base
1983 - 1984 Chevrolet G20 Bonaventure
1980 - 1981 Chevrolet G20 Nomad
1980 - 1995 Chevrolet G20 Sportvan, Chevy Van, Beauville
1980 - 1996 Chevrolet G30 Beauville, Hi-Cube, Chevy Van, Sportvan
1983 - 1984 Chevrolet G30 Bonaventure
1980 - 1985 Chevrolet Impala Base
1981 - 1982 Chevrolet Impala Estate
1980 Chevrolet Impala Sport
1994 - 1996 Chevrolet Impala SS
1980 - 1981 Chevrolet K10 Cheyenne
1981 - 1986 Chevrolet K10 Custom
1980 Chevrolet K10 Custom Deluxe
1981 Chevrolet K10 Deluxe
1980 - 1986 Chevrolet K10 Silverado, Scottsdale
1981 - 1986 Chevrolet K10 Suburban Custom
1980 Chevrolet K10 Suburban Custom Deluxe
1981 Chevrolet K10 Suburban Deluxe
1980 - 1986 Chevrolet K10 Suburban Silverado, Scottsdale
1994 - 1995 Chevrolet K1500 Base
1988 - 1992 Chevrolet K1500 Scottsdale
1988 - 1995 Chevrolet K1500 Silverado, Cheyenne
1991 Chevrolet K1500 Sport
1990 - 1995 Chevrolet K1500 WT
1992 - 1995 Chevrolet K1500 Suburban Base
1995 Chevrolet K1500 Suburban LT, LS
1992 - 1994 Chevrolet K1500 Suburban Silverado
1980 - 1981 Chevrolet K20 Cheyenne
1981 - 1986 Chevrolet K20 Custom
1980 Chevrolet K20 Custom Deluxe
1981 Chevrolet K20 Deluxe
1980 - 1986 Chevrolet K20 Scottsdale, Silverado
1981 - 1986 Chevrolet K20 Suburban Custom
1980 Chevrolet K20 Suburban Custom Deluxe
1981 Chevrolet K20 Suburban Deluxe
1980 - 1986 Chevrolet K20 Suburban Scottsdale, Silverado
1994 - 1995 Chevrolet K2500 Base, WT
1988 - 1995 Chevrolet K2500 Cheyenne, Silverado
1988 - 1992 Chevrolet K2500 Scottsdale
1992 - 1995 Chevrolet K2500 Suburban Base
1995 Chevrolet K2500 Suburban LS, LT
1992 - 1994 Chevrolet K2500 Suburban Silverado
1980 - 1981 Chevrolet K30 Cheyenne
1981 - 1986 Chevrolet K30 Custom
1980 Chevrolet K30 Custom Deluxe
1981 Chevrolet K30 Deluxe
1980 - 1986 Chevrolet K30 Scottsdale, Silverado
1994 - 1995 Chevrolet K3500 Base
1988 - 1992 Chevrolet K3500 Scottsdale
1988 - 1995 Chevrolet K3500 Silverado, Cheyenne
1981 - 1986 Chevrolet K5 Blazer Custom
1980 Chevrolet K5 Blazer Custom Deluxe, Cheyenne
1981 Chevrolet K5 Blazer Deluxe
1984 Chevrolet K5 Blazer Scottsdale
1980 - 1986 Chevrolet K5 Blazer Silverado
1980 - 1983 Chevrolet Malibu Classic
1980 - 1981 Chevrolet Malibu Classic Landau, Base
1980 Chevrolet Malibu Sport, Classic Estate, Estate, Classic Sport
1981 - 1988 Chevrolet Monte Carlo Base
1983 Chevrolet Monte Carlo CL
1980 - 1981 Chevrolet Monte Carlo Landau
1986 - 1988 Chevrolet Monte Carlo LS
1980 Chevrolet Monte Carlo Sport
1983 - 1988 Chevrolet Monte Carlo SS
1980 - 1989 Chevrolet P20 Step-Van, Base
1980 - 1998 Chevrolet P30 Base
1980 - 1990 Chevrolet P30 Step-Van
1987 Chevrolet R10 Custom Deluxe, Silverado, Scottsdale
1987 Chevrolet R10 Suburban Custom Deluxe
1987 - 1988 Chevrolet R10 Suburban Silverado, Scottsdale
1989 - 1991 Chevrolet R1500 Suburban Silverado, Scottsdale
1988 Chevrolet R20 Cheyenne
1987 - 1988 Chevrolet R20 Silverado, Custom Deluxe, Scottsdale
1987 Chevrolet R20 Suburban Custom Deluxe
1987 - 1988 Chevrolet R20 Suburban Silverado, Scottsdale
1989 Chevrolet R2500 Scottsdale, Cheyenne, Silverado
1989 - 1991 Chevrolet R2500 Suburban Scottsdale, Silverado
1988 Chevrolet R30 Cheyenne
1987 - 1988 Chevrolet R30 Custom Deluxe, Scottsdale, Silverado
1989 - 1991 Chevrolet R3500 Cheyenne, Silverado
1989 - 1990 Chevrolet R3500 Scottsdale
1995 Chevrolet Tahoe LS, LT, Base
1987 Chevrolet V10 Custom Deluxe, Scottsdale, Silverado
1987 Chevrolet V10 Suburban Custom Deluxe
1987 - 1988 Chevrolet V10 Suburban Silverado, Scottsdale
1989 - 1991 Chevrolet V1500 Suburban Scottsdale, Silverado
1987 Chevrolet V20 Silverado, Custom Deluxe, Scottsdale
1987 Chevrolet V20 Suburban Custom Deluxe
1987 - 1988 Chevrolet V20 Suburban Scottsdale, Silverado
1989 - 1991 Chevrolet V2500 Suburban Scottsdale, Silverado
1988 Chevrolet V30 Cheyenne
1987 - 1988 Chevrolet V30 Silverado, Custom Deluxe, Scottsdale
1989 - 1990 Chevrolet V3500 Scottsdale
1989 - 1991 Chevrolet V3500 Silverado, Cheyenne
1993 Excalibur Limited Base
1985 Excalibur Phaeton Anniversary
1980 - 1989 Excalibur Phaeton Base
1980 - 1986 GMC C1500 Base, Sierra Classic, High Sierra
1980 GMC C1500 Heavy Half
1994 - 1995 GMC C1500 Sierra SL, Sierra Special, Sierra SLT
1988 - 1995 GMC C1500 Sierra SLE
1988 - 1993 GMC C1500 Sierra SLX, Sierra
1980 - 1982 GMC C1500 Street Coupe, Sierra Grande
1980 - 1995 GMC C1500 Suburban Base
1980 - 1986 GMC C1500 Suburban Sierra Classic, High Sierra
1980 - 1982 GMC C1500 Suburban Sierra Grande
1992 - 1995 GMC C1500 Suburban SLE
1995 GMC C1500 Suburban SLT
1980 - 1986 GMC C2500 Sierra Classic, High Sierra, Base
1980 - 1982 GMC C2500 Sierra Grande
1994 - 1995 GMC C2500 Sierra SL, Sierra SLT
1988 - 1995 GMC C2500 Sierra SLE
1988 - 1993 GMC C2500 Sierra, Sierra SLX
1980 - 1995 GMC C2500 Suburban Base
1980 - 1986 GMC C2500 Suburban High Sierra, Sierra Classic
1980 - 1982 GMC C2500 Suburban Sierra Grande
1992 - 1995 GMC C2500 Suburban SLE
1995 GMC C2500 Suburban SLT
1980 - 1986 GMC C3500 Base, Sierra Classic, High Sierra
1980 - 1982 GMC C3500 Sierra Grande
1994 - 1995 GMC C3500 Sierra SL, Sierra SLT
1988 - 1995 GMC C3500 Sierra SLE
1988 - 1993 GMC C3500 Sierra, Sierra SLX
1981 - 1986 GMC Caballero Amarillo
1981 GMC Caballero Conquista, Royal Knight
1980 - 1987 GMC Caballero Diablo, Base
1980 GMC Caballero Laredo
1983 - 1984 GMC G1500 Rally Custom
1980 - 1995 GMC G1500 Rally, Rally STX, Vandura
1983 - 1984 GMC G2500 Rally Custom
1980 - 1995 GMC G2500 Rally, Rally STX, Vandura
1981 - 1988 GMC G3500 Rally Custom
1980 - 1996 GMC G3500 Rally STX, Vandura, Rally, Magnavan, Rally Camper Special, Vandura Special
1980 - 1991 GMC Jimmy Base
1980 - 1985 GMC Jimmy High Sierra
1980 - 1990 GMC Jimmy Sierra Classic
1980 - 1982 GMC Jimmy Sierra Grande, Street Coupe
1986 GMC Jimmy Silverado
1980 - 1986 GMC K1500 Sierra Classic, Base, High Sierra
1980 - 1982 GMC K1500 Sierra Grande
1988 - 1995 GMC K1500 Sierra SLE
1995 GMC K1500 Sierra SLS
1994 - 1995 GMC K1500 Sierra SLT, Sierra SL, Sierra Special
1993 GMC K1500 Sierra Sport
1988 - 1993 GMC K1500 Sierra, Sierra SLX
1980 - 1995 GMC K1500 Suburban Base
1980 - 1986 GMC K1500 Suburban Sierra Classic, High Sierra
1980 - 1982 GMC K1500 Suburban Sierra Grande
1992 - 1995 GMC K1500 Suburban SLE
1995 GMC K1500 Suburban SLT
1980 - 1986 GMC K2500 High Sierra, Base, Sierra Classic
1980 - 1982 GMC K2500 Sierra Grande
1988 - 1995 GMC K2500 Sierra SLE
1994 - 1995 GMC K2500 Sierra SLT, Sierra SL
1988 - 1993 GMC K2500 Sierra SLX, Sierra
1980 - 1995 GMC K2500 Suburban Base
1980 - 1986 GMC K2500 Suburban High Sierra, Sierra Classic
1980 - 1982 GMC K2500 Suburban Sierra Grande
1992 - 1995 GMC K2500 Suburban SLE
1995 GMC K2500 Suburban SLT
1980 - 1986 GMC K3500 High Sierra, Base, Sierra Classic
1980 - 1982 GMC K3500 Sierra Grande
1994 - 1995 GMC K3500 Sierra SL, Sierra SLT
1988 - 1995 GMC K3500 Sierra SLE
1988 - 1993 GMC K3500 Sierra, Sierra SLX
1980 - 1989 GMC P2500 Base, Value Van
1980 - 1996 GMC P3500 Base
1980 - 1990 GMC P3500 Value Van
1987 GMC R1500 High Sierra, Base, Sierra Classic
1987 - 1991 GMC R1500 Suburban Base
1987 GMC R1500 Suburban High Sierra
1987 - 1989 GMC R1500 Suburban Sierra Classic
1990 GMC R1500 Suburban SLE
1987 - 1989 GMC R2500 Sierra Classic, High Sierra, Base
1987 - 1991 GMC R2500 Suburban Base
1987 GMC R2500 Suburban High Sierra
1987 - 1989 GMC R2500 Suburban Sierra Classic
1990 GMC R2500 Suburban SLE
1987 - 1991 GMC R3500 Base
1987 - 1989 GMC R3500 Sierra Classic, High Sierra
1990 - 1991 GMC R3500 SLE
1987 GMC V1500 High Sierra, Base, Sierra Classic
1987 - 1991 GMC V1500 Suburban Base
1987 GMC V1500 Suburban High Sierra
1987 - 1989 GMC V1500 Suburban Sierra Classic
1990 GMC V1500 Suburban SLE
1987 GMC V2500 Sierra Classic, High Sierra, Base
1987 - 1991 GMC V2500 Suburban Base
1987 GMC V2500 Suburban High Sierra
1987 - 1989 GMC V2500 Suburban Sierra Classic
1990 GMC V2500 Suburban SLE
1987 - 1991 GMC V3500 Base
1987 - 1989 GMC V3500 Sierra Classic, High Sierra
1990 - 1991 GMC V3500 SLE
1992 - 1995 GMC Yukon Base, SLE
1993 GMC Yukon GT
1995 GMC Yukon SLT
1992 - 1994 GMC Yukon Sport
1991 - 1992 Oldsmobile Custom Cruiser Base
1980 Oldsmobile Cutlass Base, LS, Brougham
1980 Oldsmobile Cutlass Calais Base
1980 - 1982 Oldsmobile Cutlass Cruiser Base
1980 Oldsmobile Cutlass Cruiser Brougham
1980 Oldsmobile Cutlass Salon Base, Brougham
1980 Oldsmobile Cutlass Supreme Base, Brougham
1983 - 1986 Pontiac Bonneville Brougham, Base
1984 - 1986 Pontiac Bonneville LE
1980 - 1981 Pontiac Firebird Esprit
1982 - 1986 Pontiac Firebird S/E
1994 Pontiac Firebird Trans Am GT
1989 - 1992 Pontiac Firebird Trans Am GTA
1989 Pontiac Firebird Trans Am GTA SE
1980 - 1997 Pontiac Firebird Trans Am, Formula, Base
1980 Pontiac Grand Am Base
1980 Pontiac Grand LeMans Safari, Base, LE
1980 - 1987 Pontiac Grand Prix Base
1983 - 1987 Pontiac Grand Prix Brougham
1984 - 1987 Pontiac Grand Prix LE
1980 - 1983 Pontiac Grand Prix LJ
1980 Pontiac Grand Prix SJ
1980 Pontiac LeMans Safari, Base
1983 - 1986 Pontiac Parisienne Brougham, Base
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: 31996078613

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4.4 ★★★★★
Based on 10 reviews
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Product Reviews
C
Verified Purchase
Chris
New York, US
★★★★★ 5
Go Ridding and Go Flatless with QuickStrike tire sealent
Size: 1 Gallon + Tool, Set name: Off-Road Formula
I’ve tried several tire sealants over the years on my ebikes and scooters, but FlatOut QuickStrike is by far the best I’ve used. From the moment I added it to my bike tires, I noticed a difference—it’s incredibly easy to install, and you don’t have to convert to tubeless to benefit from its protection. The formula is thin and spreads quickly, sealing punctures almost instantly so you don’t lose much air. What I feel that really stands out is how effective it is. I ride my ebikes through rough terrain with lots of thorns and debris, and since using FlatOut QuickStrike, I haven’t had a single flat ( unlike before ). Even when I’ve picked up multiple punctures, the sealant has handled them all without a problem. I feel that the peace of mind it gives me is priceless, especially on long rides or commutes where a flat could ruin your day ( and It has in the past ). Another big plus is that it’s a one-time application—it won’t dry out or turn into a mess inside your tire ( like that Green Stuff ). It’s also safe for both tubes and tubeless setups, and works well in my 20 inch and 14 inch tires. I’ve used it on my ebikes and scooters and the results have been consistently impressive. Make me feel confident of the durability of my tires on my ride. I bought the gallon bottle because I have a few ebikes and scooters. this stuff works great! If you want to spend less time fixing flats and more time enjoying your ride, this is the sealant to get. Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 14, 2025
M
Verified Purchase
Mama-Corvi
Bozeman, US
★★★★★ 5
Fat tire savior
Size: 1 Gallon + Tool, Set name: Off-Road Formula
The best fat tire and dirtbike sealant we have found and love the gallon size. Pump clogs but clears with a strong push and love that it is water cleanup.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
J
Verified Purchase
JRTX
Carnegie, US
★★★★★ 5
Worked perfectly for me. Sorry I waited so long.
Size: 1 Gallon + Tool, Set name: Off-Road Formula
I was clearing a field full of mesquite trees, and my tractor tires were getting destroyed. Mesquite has nasty 3-inch thorns, and I was plugging tires constantly. Eventually, all four tires were flat at the start of each day. These tires had been plugged more than 10 times each. I bought FlatOut Quick Strike and followed the instructions exactly. The pump dispenses about 1 oz per pump, so I put 30 pumps in each tire, and the bottle was mostly empty by the time I finished. Typical with any pump dispenser it was also difficult to get the last bit out of the bottle using the pump. It’s been a week now. One tire has lost about 1 PSI, but the other three are still holding exactly where I set them. Considering how badly these tires were damaged, I’m impressed so far. This is the first time I’ve gone more than a day without dealing with flats in that field.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 13, 2026
D
Verified Purchase
Duncan Souza
West Palm Beach, US
★★★★★ 4
Pump is worthless
Size: 1 Gallon + Tool, Set name: Small Tire/Bicycle Formula
The sealant is good. The gallon pump is a joke. Pump stopped working 4 pumps in. Went and got another replacement pump from automotive store, also broke after 4 pumps. Ended up cleaning out an old Slime bottle and pouring in the flat out sealant in the slime bottle, so I could actually get it in my tires.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
A
Verified Purchase
Amazon Customer
Chelsea, US
★★★★★ 1
There seems to be a chronic problem with the provided dispensing pump.
Size: 1 Gallon + Tool, Set name: Off-Road Formula
I looked at online reviews of the product performance and was impressed by its purported ability seal tire punctures. While the product may (or may not) perform well, the provided dispensing pump is pathetically unsuited for the application and it is impossible to clear the pump once the material clogs the small dispensing port. Some of the reviews indicated this but i assumed that they were not very mechanical inclined customers. The product, by design, has particulates, of varying sizes, suspended in the liquid sealant. The port on pump is very small and easily becomes blocked with the sealant and particulates that cannot be cleared; even when following the instructions to do so. It is very irresponsible for the manufacturer to continue selling this item with inevitable relative failure of the pump as this is the only way to get the sealant into a tire.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 2, 2025

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