🌍 We Ship Worldwide Learn more

💵 Afterpay available, shop now, pay later Learn more

💬 Customer Support Click here

Flowmaster  |  SKU: 817412

Flowmaster American Thunder Crossmember-Back Exhaust System - 817412

Fits 1964-1967 GM A-Body with V8 engine, 2.5" Stainless Steel Pipes. - Aggressive to moderate sound

Regular price $2,173.40 NZD + GST
Shipping calculated at checkout.
⚠ Special Order Item — ships direct from supplier. No returns, exchanges, or cancellations once processed. Please allow 7–20 days shipping.

Description

Fits 1964-1967 GM A-Body with V8 engine, 2.5" Stainless Steel Pipes. - Aggressive to moderate sound

Part Number: 817412

This American Thunder® exhaust system comes as a complete true dual Crossmember-Back exhaust for your 1964-1967 GM A-body with a V8 engine. These dual exhaust systems feature 2.50-inch mandrel-bent stainless steel tubing for maximum performance, includes a built-in H-pipe/balance tube flowing into a pair of large case Super 40® mufflers that deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. The 2.50-inch tailpipes exit at the rear corners of the car and angle down under the rear bumper for a strong muscular look. The system includes all hangers and necessary hardware for installation. Like all Flowmaster® systems, the benefits include improved throttle response, power and mileage and is covered by our Lifetime Limited Warranty.

Features and Benefits

• H-pipe Crossover for Maximum Power and Deep Tone
• Super 40 Series Mufflers for Deep Powerful Sound
• Mandrel-bent 16-gauge Stainless Steel Tubing
• Includes Hangers and Hardware for Installation
• Moderate to Aggressive Exterior Exhaust Tone
• Crossmember-Back True Dual Exhaust System
• Lifetime Limited Warranty

Does Not Include Header Reducers or downpipes for factory manifolds

Specifications

  • Specifications
    BrandFlowmaster
    California Proposition 65Yes
    California Proposition 65 Chemical NameChromium (hexavalent compounds)
    California Proposition 65 Chemical NameNickel (Metallic)
    CARB (California) CompliantYes
    Catalytic Converter IncludedNo
    Catalytic Converter Quantity0
    CategoryExhaust
    Clamping TypeFlat Band
    Clamps IncludedYes
    Drive2WD
    Emission Code5
    Exhaust SeriesAmerican Thunder
    Exhaust Tip ConnectionClamp-On
    Exhaust Tip QuantitySold Separately
    Exhaust Tip Quantity0
    Exhaust Tip ShapeRound
    Exit StyleDual Out Rear
    Exit StyleDual Out Side
    FinishNatural
    Gasket Or Seal IncludedNo
    Grade TypePerformance
    Hangers IncludedYes
    Heat Shield IncludedNo
    Inlet Diameter2.50
    Inlet TypeWeld-On
    Main Piping Diameter2.50
    Mounting Bracket IncludedYes
    Muffler (Left) Body Height5.00
    Muffler (Left) Body Length13.50
    Muffler (Left) Body Width10.00
    Muffler (Left) TypeChambered
    Muffler (Right) Body Height5.00
    Muffler (Right) Body Length13.50
    Muffler (Right) Body Width10.00
    Muffler (Right) TypeChambered
    Muffler Body Height5.00
    Muffler Body Length13.50
    Muffler Body Material409 Stainless Steel
    Muffler Body ShapeOval
    Muffler Body Width10.00
    Muffler FinishBlack High-Temperature Paint Finish
    Muffler Flanged InletNo
    Muffler Flanged OutletNo
    Muffler IncludedYes
    Muffler Inlet ConnectionSlip-Fit
    Muffler Inlet Inside Diameter2.50
    Muffler Inlet Outside Diameter2.63
    Muffler Outlet ConnectionSlip-Fit
    Muffler Outlet Quantity1
    Muffler Part NumberKit Only
    Muffler Quantity2
    Muffler SeriesSuper 40 Series
    Muffler TypeChambered
    part typeExhaust System
    Pipe ColorSilver
    Pipe Material409 Stainless Steel
    Product TypeExhaust System
    Sound LevelAggressive / Moderate
    Spring Bolt Kit IncludedNo
    Sub CategoryExhaust and Tail Pipes
    Tail Pipe Outlet Outside Diameter2.50
    Tail Pipe Quantity2
    Tail Pipe QuantityDual
    Tail Pipe Tapered OutletNo
    TypeCrossmember-back
    Valve IncludedNo
    Valve TypeNot Applicable
    WarningCalifornia Proposition 65
  • Instructions

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.