Quiet Performance Muffler
QP (Quiet Performance) Internal Mufflers
(For Dual Exhaust Only!)
(muffler only, stack ordered seperately)
• Quiet as Stock Mufflers*
• Meets Federal and California Sound Levels
• 6.2% Fuel Mileage Increase (avg.)
• 3% HORSEPOWER Gain
• No Turbo Lag, Faster Acceleration
• Easy Installation
• Fits Inside 5", 6" or 7" Stacks (dual only)
• Straight Stack Look WITHOUT the Noise!
* Driving and Acceleration only, NOT engine braking.
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![Internal Muffler/Dampener 8" x 45"]( "Internal Muffler/Dampener 8\" x 45\"")
![Internal Muffler/Dampener 8" x 45"]( "Internal Muffler/Dampener 8\" x 45\"")
Internal Muffler/Dampener 8" x 45"
Grand Rock
OEM PRICE $1,099.98YOUR PRICE $879.98VK-8 Internal Dampner 8" x 45" Add to your Pipe PIPE NOT INCLUDED At Truck Pipes USA we offer you a large variety of exhaust systems for All Kenworth trucks on the road today. Browse our site and you will see that we have...GRCVK-8OEM PRICE $1,099.98YOUR PRICE $879.98 -
![Internal Muffler/Dampener 7" x 45"]( "Internal Muffler/Dampener 7\" x 45\"")
![Internal Muffler/Dampener 7" x 45"]( "Internal Muffler/Dampener 7\" x 45\"")
Internal Muffler/Dampener 7" x 45"
Grand Rock
OEM PRICE $1,074.98YOUR PRICE $859.98VK-7 Internal Dampner 7" x 45" Add to your Pipe PIPE NOT INCLUDED At Truck Pipes USA we offer you a large variety of exhaust systems for All Kenworth trucks on the road today. Browse our site and you will see that we have...GRCVK-7OEM PRICE $1,074.98YOUR PRICE $859.98 -
![Internal Muffler/Dampener 6" x 45"]( "Internal Muffler/Dampener 6\" x 45\"")
![Internal Muffler/Dampener 6" x 45"]( "Internal Muffler/Dampener 6\" x 45\"")
Internal Muffler/Dampener 6" x 45"
Grand Rock
OEM PRICE $999.98YOUR PRICE $799.98VK-6 Internal Dampner 6" x 45" Add to your Pipe PIPE NOT INCLUDED At Truck Pipes USA we offer you a large variety of exhaust systems for All Kenworth trucks on the road today. Browse our site and you will see that we have...GRCVK-6OEM PRICE $999.98YOUR PRICE $799.98 -
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![QP-5LC or VK-5 Internal Dampener 5" x 45" Add to your Pipe]( "QP-5LC or VK-5 Internal Dampener 5\" x 45\" Add to your Pipe")
![QP-5LC or VK-5 Internal Dampener 5" x 45" Add to your Pipe]( "QP-5LC or VK-5 Internal Dampener 5\" x 45\" Add to your Pipe")
QP-5LC or VK-5 Internal Dampener 5" x 45" Add to your Pipe
Grand Rock
OEM PRICE $817.00YOUR PRICE $617.00QP-5LC or VK-5 Internal Dampner 5" x 45" Add to your Pipe PIPE NOT INCLUDED At Truck Pipes USA we offer you a large variety of exhaust systems for All Kenworth trucks on the road today. Browse our site and you will see that...GRCVK-5OEM PRICE $817.00YOUR PRICE $617.00 -
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![QPM-561 Aero Cab Muffler Type 1 6" x 61" with 5" ID Outlet and 5" OD Inlet]( "QPM-561 Aero Cab Muffler Type 1 6\" x 61\" with 5\" ID Outlet and 5\" OD Inlet")
![QPM-561 Aero Cab Muffler Type 1 6" x 61" with 5" ID Outlet and 5" OD Inlet]( "QPM-561 Aero Cab Muffler Type 1 6\" x 61\" with 5\" ID Outlet and 5\" OD Inlet")
Kenworth Aero Quiet Perfomance Muffler 5" x 61" QPM-561
Grand Rock
OEM PRICE $2,021.00YOUR PRICE $1,132.00QPM-561 Aero Cab Muffler Type 1 5" x 61" 5 ID/OD QPM-561 Muffler Replacement At Truck Pipes USA we offer you a large variety of exhaust systems for All Kenworth trucks on the road today. Browse our...GRCQPM-561OEM PRICE $2,021.00YOUR PRICE $1,132.00 -
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![QPM-561AERO-2 for Dual Mufflers AeroCab Kenworth Muffler Kit]( "QPM-561AERO-2 for Dual Mufflers AeroCab Kenworth Muffler Kit")
![QPM-561AERO-2 for Dual Mufflers AeroCab Kenworth Muffler Kit]( "QPM-561AERO-2 for Dual Mufflers AeroCab Kenworth Muffler Kit")
QPM-561AERO-2 for Dual Mufflers AeroCab Kenworth Muffler Kit
Grand Rock
OEM PRICE $5,074.00YOUR PRICE $2,574.00QPM-561AERO-2 Aero Cab Muffler 5" x 61" 5 ID/OD QPM-561AERO DUAL Muffler Replacement Kit DUAL Kit Includes QPM-561 TYPE 1, 6" X 61", 5" ID/OD, AERO CAB MUFFLER 2 PCS KW-5AEY2M KW AERO CAB Y-PIPE ALZ. 1 ...GRCQPM-561AERO-2OEM PRICE $5,074.00YOUR PRICE $2,574.00 -
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![QPM-561 Aero Cab for Single Muffler Kit 5" x 61"]( "QPM-561 Aero Cab for Single Muffler Kit 5\" x 61\"")
![QPM-561 Aero Cab for Single Muffler Kit 5" x 61" ID/OD]( "QPM-561 Aero Cab for Single Muffler Kit 5\" x 61\" ID/OD")
QPM-561 Aero Cab Single Muffler Kit 5" x 61"
Grand Rock
OEM PRICE $5,065.00YOUR PRICE $2,265.00QPM-561 Aero Cab Muffler Type 1 5" x 61" 5 ID/OD QPM-561AERO Single Muffler Replacement Kit Kit Includes: QPM-561 QPM-561 AERO MUFFLER 2. PCS KW-5AEY AEROKIT Y-PIPE 1. PCS KW-18614 REP K180-18614 1. PCS ...GRCQPM-561AEROOEM PRICE $5,065.00YOUR PRICE $2,265.00
