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- Exhaust Kits - Header/Manifold Back
- FlowTech Super Street Header/Manifold Back Dual Exhaust Kits
Flowtech Header Back Super Street Dual Kit 1973-87 Chevy/GMC 1/2, 3/4 & 1 Ton Pickups
387-51525
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Items You Need
Header Dual Kits
Direct Fit To:
Flowtech Headers 387-11500
Specifications:
System Material
Steel
System Style
Header-back
Exit Quantity
Two
Exit Location
Split side
System Finish
Aluminized
Muffler Included
No
Exhaust Type
Dual
Hardware Included
Yes
Inlet Quantity
Two
Tailpipe Diameter (in.)
2.25
Tip Included
No
Tip Finish
Aluminized
Tip Finish
Aluminized
Quantity
Sold as a kit
Intermediate Pipe Diameter
2.25 in (57.15 mm)
Manufacturer's Part Number:
51525FLT
Shipping Weight:
45.5
Package Height:
55
Package Depth:
8.5
Package Width:
18
FlowTech's Super Street Dual Exhaust Pipe Kits are the answer for the perfect sound for your 1973-87 GM truck or 1970-81 Camaro. Constructed from mandrel bent 2.25'', 16 gauge, steel tubing. These Kits are designed to keep all tubing tucked up and well placed above the bottom of your vehicle's frame for maximum ground clearance. Kits available for long tube headers, Shorty headers or even factory-style OE Shorty headers all utilizing factory exit locations. These kits come with the necessary hardware and instructions for an easy and effortless install. NOTE: FlowTech's Super Street exhaust kits do not include mufflers. You can choose your favorite 2.25'' Center In/Offset Out mufflers to complete your exhaust project!Aggressive Sound for an Affordable Price
Does Flowtech 51525 fit your vehicle?
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1976 CHEVROLET K20 SUBURBAN
- Liter: 6.6
- SubModel: SILVERADO
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 2.25 in. Tubing; Dual Kit; Dual Rear Exit; Incl. RH-LH Header Ext. Pipe/Ft. Tailpipe Ext. Pipe/RH-LH Tailpipes/Hardware; w/o Mufflers;Legal in California Only for Racing Vehicles; This part is legal for sale or use on Racing Use Only Vehicles~ WARNING: It is against the law to install this part on an Emissions Controlled Vehicle~ The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street
- CUI: 400
- Engine Type: V8 ( 6.6L / 400 )
- Engine Vin: U
1980 CHEVROLET K10
- Liter: 5.7
- SubModel: CHEYENNE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 2.25 in. Tubing; Dual Kit; Dual Rear Exit; Incl. RH-LH Header Ext. Pipe/Ft. Tailpipe Ext. Pipe/RH-LH Tailpipes/Hardware; w/o Mufflers;Legal in California Only for Racing Vehicles; This part is legal for sale or use on Racing Use Only Vehicles~ WARNING: It is against the law to install this part on an Emissions Controlled Vehicle~ The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street
- CUI: 350
- Engine Type: V8 ( 5.7L / 350 )
- Engine Vin: M
1975 CHEVROLET K10
- Liter: 5.7
- SubModel: SILVERADO
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 2.25 in. Tubing; Dual Kit; Dual Rear Exit; Incl. RH-LH Header Ext. Pipe/Ft. Tailpipe Ext. Pipe/RH-LH Tailpipes/Hardware; w/o Mufflers;Legal in California Only for Racing Vehicles; This part is legal for sale or use on Racing Use Only Vehicles~ WARNING: It is against the law to install this part on an Emissions Controlled Vehicle~ The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street
- CUI: 350
- Engine Type: V8 ( 5.7L / 350 )
- Engine Vin: Y
1975 CHEVROLET K10 SUBURBAN
- Liter: 5.7
- SubModel: SILVERADO
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 2.25 in. Tubing; Dual Kit; Dual Rear Exit; Incl. RH-LH Header Ext. Pipe/Ft. Tailpipe Ext. Pipe/RH-LH Tailpipes/Hardware; w/o Mufflers;Legal in California Only for Racing Vehicles; This part is legal for sale or use on Racing Use Only Vehicles~ WARNING: It is against the law to install this part on an Emissions Controlled Vehicle~ The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street
- CUI: 350
- Engine Type: V8 ( 5.7L / 350 )
- Engine Vin: V
1983 CHEVROLET K30
- Liter: 5.7
- SubModel: CUSTOM
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 2.25 in. Tubing; Dual Kit; Dual Rear Exit; Incl. RH-LH Header Ext. Pipe/Ft. Tailpipe Ext. Pipe/RH-LH Tailpipes/Hardware; w/o Mufflers;Legal in California Only for Racing Vehicles
- CUI: 350
- Engine Type: V8 ( 5.7L / 350 )
- Engine Vin: M
1980 GMC K3500
- Liter: 5.7
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 2.25 in. Tubing; Dual Kit; Dual Rear Exit; Incl. RH-LH Header Ext. Pipe/Ft. Tailpipe Ext. Pipe/RH-LH Tailpipes/Hardware; w/o Mufflers;Intended For Race Use Only
- CUI: 350
- Engine Type: V8 ( 5.7L / 350 )
- Engine Vin: L
1982 GMC K1500 SUBURBAN
- Liter: 5
- SubModel: SIERRA GRANDE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 2.25 in. Tubing; Dual Kit; Dual Rear Exit; Incl. RH-LH Header Ext. Pipe/Ft. Tailpipe Ext. Pipe/RH-LH Tailpipes/Hardware; w/o Mufflers;Legal in California Only for Racing Vehicles; This part is legal for sale or use on Racing Use Only Vehicles~ WARNING: It is against the law to install this part on an Emissions Controlled Vehicle~ The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street
- CUI: 305
- Engine Type: V8 ( 5L / 305 )
- Engine Vin: H
1976 GMC K25 SUBURBAN
- Liter: 6.6
- SubModel: SIERRA CLASSIC
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 2.25 in. Tubing; Dual Kit; Dual Rear Exit; Incl. RH-LH Header Ext. Pipe/Ft. Tailpipe Ext. Pipe/RH-LH Tailpipes/Hardware; w/o Mufflers;Legal in California Only for Racing Vehicles
- CUI: 400
- Engine Type: V8 ( 6.6L / 400 )
- Engine Vin: U
1977 GMC K25 SUBURBAN
- Liter: 6.6
- SubModel: HIGH SIERRA
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 2.25 in. Tubing; Dual Kit; Dual Rear Exit; Incl. RH-LH Header Ext. Pipe/Ft. Tailpipe Ext. Pipe/RH-LH Tailpipes/Hardware; w/o Mufflers;Legal in California Only for Racing Vehicles
- CUI: 400
- Engine Type: V8 ( 6.6L / 400 )
- Engine Vin: R
1976 CHEVROLET K10
- Liter: 5.7
- SubModel: SCOTTSDALE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 2.25 in. Tubing; Dual Kit; Dual Rear Exit; Incl. RH-LH Header Ext. Pipe/Ft. Tailpipe Ext. Pipe/RH-LH Tailpipes/Hardware; w/o Mufflers;Legal in California Only for Racing Vehicles; This part is legal for sale or use on Racing Use Only Vehicles~ WARNING: It is against the law to install this part on an Emissions Controlled Vehicle~ The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street
- CUI: 350
- Engine Type: V8 ( 5.7L / 350 )
- Engine Vin: V
1980 CHEVROLET K20
- Liter: 5
- SubModel: CUSTOM DELUXE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 2.25 in. Tubing; Dual Kit; Dual Rear Exit; Incl. RH-LH Header Ext. Pipe/Ft. Tailpipe Ext. Pipe/RH-LH Tailpipes/Hardware; w/o Mufflers;Legal in California Only for Racing Vehicles; This part is legal for sale or use on Racing Use Only Vehicles~ WARNING: It is against the law to install this part on an Emissions Controlled Vehicle~ The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street
- CUI: 305
- Engine Type: V8 ( 5L / 305 )
- Engine Vin: G
1985 CHEVROLET K10 SUBURBAN
- Liter: 5
- SubModel: CUSTOM
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 2.25 in. Tubing; Dual Kit; Dual Rear Exit; Incl. RH-LH Header Ext. Pipe/Ft. Tailpipe Ext. Pipe/RH-LH Tailpipes/Hardware; w/o Mufflers;Legal in California Only for Racing Vehicles
- CUI: 305
- Engine Type: V8 ( 5L / 305 )
- Engine Vin: F
51525 - FlowTech Super Street Header/Manifold Back Dual Exhaust Kits is rated
out of
5 by
6.
Rated 5 out of
5
by
fusebox from
perfect fit
Fit like a champ and with my flowtec red hots it sounds great,and super fast delivery
Date published: 2015-06-05
Rated 4 out of
5
by
fatjac from
Great system everything fit like it should,good quality and complete
Date published: 2016-12-01
Rated 3 out of
5
by
GilboBaggins from
Poor quality hardware included
I mated this kit to flowtech headers and flowmaster delta 40 mufflers. It all fit fairly well and I couldn't be happier with the sound and performance, but, -2 stars for complete garbage exhaust clamps. I stripped every one trying to tighten the exhaust enough to seal. I ended up trashing them all and bought steel clamps from the local parts store. The hangers were adequate but also note that this kit does not have enough clamps to account for the mufflers either.
Date published: 2019-10-16
Rated 3 out of
5
by
HV22 from
Pipes
Would be better if the parts were labeled as to the order in which they go and whether parts are for the tight or left side. Also some of the parts wete hard to put together because tolerances were too close or way loose.
Date published: 2016-07-28
Rated 3 out of
5
by
Wesd from
flowtech 51525
Decent kit for the price. I installed on a 2 wheel drive and had to modify the head pipes. The flared ends did not slip over the pipe so had to rent a pipe expander. Also the bends and lengths on mirror pieces were off.
Date published: 2015-09-24
Rated 2 out of
5
by
Alex C from
you get what you pay for
Does not fit around the chevy K10 xfer case, despite the website's recommendation. Now I'm out the $150. Cheaply made and packaged, in fact my box was so thin it had torn all up the side during shpping by the time it was delivered to me. Return shipping would've cost me $50.00
Date published: 2017-07-14
Do you have a similar kit but in 3"
This is the only kit listed for this application in 4wd.
Date published: 2018-06-08
Some parts are not legal for use in California or other states with similar laws / regulations
Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools:
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.