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First found out about Maryland Speed on LS1Tech. I purchased a muffler for my GM truck, and got it i...

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 6 Latest FAQs  more
Where can I see what parts are in stock?
What do each order status mean?
Why does the 2005-2006 Vararam GTO Intake not work on a 2004?
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 6 FAQs Categories  more
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GM Duramax Diesel (2001+)

Air Intake & Induction

Computer & ECM

Engine Components

Exhaust Components

Gauges and Gauge Pods

Suspension
 6 Featured Products in GM Duramax Diesel (2001+)  more
 Airaid Cold Air Intake System - 2004-2005 Silverado and Sierra HD Duramax (6.6L LLY)
Airaid Cold Air Intake System - 2004-2005 Silverado and Sierra HD Duramax (6.6L LLY)
$463.89
$371.11
 K&N FIPK Cold Air Intake - 2007-2010 Silverado and Sierra with 6.6L LMM Duramax Diesel
K&N FIPK Cold Air Intake - 2007-2010 Silverado and Sierra with 6.6L LMM Duramax Diesel
$565.87
$324.47
 S&B Cold Air Intake System (Cleanable Filter) - 2007-2010 Silverado & Sierra (6.6L LMM Duramax Diesel)
S&B Cold Air Intake System (Cleanable Filter) - 2007-2010 Silverado & Sierra (6.6L LMM Duramax Diesel)
$269.00
$259.00
 6 Specials For June  6
  Magnaflow Performance 4" Aluminized 'PRO SERIES' (Turbo Back) Exhaust System - 2001-2007, Chevrolet/GMC 2500/3500 Duramax, V8 6.6L (EC-CC/SB-LB)   Magnaflow Performance 4" Aluminized 'PRO SERIES' (Turbo Back) Exhaust System - 2001-2007, Chevrolet/GMC 2500/3500 Duramax, V8 6.6L (EC-CC/SB-LB)   $560.20  $376.86   Buy Now  
  Gibson Performance Swept Side (Cat Back) Stainless Steel Exhaust System - 2001-2005, Chevrolet/GMC 2500/3500 Duramax (CC-SB)   Gibson Performance Swept Side (Cat Back) Stainless Steel Exhaust System - 2001-2005, Chevrolet/GMC 2500/3500 Duramax (CC-SB)   $950.13  $604.99   Buy Now  
  Gibson Performance 4" Swept Side (Turbo Back) Exhaust System - 2006-2007, Chevrolet/GMC Duramax 6.6L (CC-SB)   Gibson Performance 4" Swept Side (Turbo Back) Exhaust System - 2006-2007, Chevrolet/GMC Duramax 6.6L (CC-SB)   $892.00  $574.99   Buy Now  
  MBRP Aluminized (Cat Back) Exhaust System - 2006-2007, Chevrolet/GMC 2500/3500 Duramax, (EC/CC)   MBRP Aluminized (Cat Back) Exhaust System - 2006-2007, Chevrolet/GMC 2500/3500 Duramax, (EC/CC)   $463.22  $374.99   Buy Now  
  DiabloSport Extreme PowerPuck - 2007.5-2010, Chevrolet 6.6L LMM Duramax   DiabloSport Extreme PowerPuck - 2007.5-2010, Chevrolet 6.6L LMM Duramax   $359.00  $279.99   Buy Now  
  Magnaflow Performance Dual 'PRO SERIES' (Filter Back) Exhaust System - 2007-2010, Chevrolet/GMC Duramax 2500HD/3500, 6.6L (EC/CC-SB/LB)   Magnaflow Performance Dual 'PRO SERIES' (Filter Back) Exhaust System - 2007-2010, Chevrolet/GMC Duramax 2500HD/3500, 6.6L (EC/CC-SB/LB)   $858.63  $663.48   Buy Now  
  Magnaflow Performance Dual 'XL' (Filter Back) Exhaust System - 2007-2010, Chevrolet/GMC Duramax 2500HD/3500, 6.6L (EC/CC-SB/LB)   Magnaflow Performance Dual 'XL' (Filter Back) Exhaust System - 2007-2010, Chevrolet/GMC Duramax 2500HD/3500, 6.6L (EC/CC-SB/LB)   $970.67  $750.07   Buy Now  
  Gibson Performance 4" Swept Side (Turbo Back) Exhaust System - 2006-2007, Chevrolet/GMC 2500-3500 Duramax 6.6L (CC-LB)   Gibson Performance 4" Swept Side (Turbo Back) Exhaust System - 2006-2007, Chevrolet/GMC 2500-3500 Duramax 6.6L (CC-LB)   $663.04  $429.99   Buy Now  
 6 New Products For June  more
  nGauge Digital Gauge - Touch Screen Tuner/Datalogger   nGauge Digital Gauge - Touch Screen Tuner/Datalogger   $499.95  $449.00   Buy Now  
  Diablosport Intune I2 Performance Tuner - 50 State Legal - 1996-2015 Gas Coverage - FREE NEXT DAY AIR!   Diablosport Intune I2 Performance Tuner - 50 State Legal - 1996-2015 Gas Coverage - FREE NEXT DAY AIR!   $450.00  $399.95   Buy Now  
  K&N AirCharger Intake System- 2015+ Silverado & Sierra Duramax (6.6L LML Duramax)   K&N AirCharger Intake System- 2015+ Silverado & Sierra Duramax (6.6L LML Duramax)   $641.99  $368.15   Buy Now  
  Superchips F5 Flashpaq Handheld Tuner for GM Vehicles - FREE NEXT DAY AIR!   Superchips F5 Flashpaq Handheld Tuner for GM Vehicles - FREE NEXT DAY AIR!   $411.95  $369.95   Buy Now  
  Diablosport Intune I2 Performance Tuner - GM Vehicles - FREE NEXT DAY AIR!   Diablosport Intune I2 Performance Tuner - GM Vehicles - FREE NEXT DAY AIR!   $450.00  $359.95   Buy Now  
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01.Diablosport Trinity Tuner and Dashboard Scanner/Computer (FREE Next Day Air Shipping!)- Now Supports 2011+ Mopar Applications!
02.Diablosport Intune I2 Performance Tuner - GM Vehicles - FREE NEXT DAY AIR!
03.HPTuners MVPI VCM Suite PRO Kit - GM Vehicles (8 Credits Included) - Discounted Wideband!
04.AFE Cleaning/Restore Kit Oiled Filters
05.Dougs Electric Cutouts- 3" Pair with Y-pipes and Hook Up Kit
Specials more
 Rotofab Cold Air Intake System - 2014-2015 Chevrolet SS Sedan (6.2L V8)
Rotofab Cold Air Intake System - 2014-2015 Chevrolet SS Sedan (6.2L V8)
$399.95
$389.95
Reviews more
 Vararam 4G Air Grabber Cold Air Intake-  2009+ Dodge Ram (5.7L, 6.4L Hemi)
To me this feels like a product designed purely to fill a ga ..
Latest products more
 Driveshaft Shop 1400 HP Level 5 Axles (Both Large Diameter Bars)  - 2009-2015 Cadillac CTS-V
Driveshaft Shop 1400 HP Level 5 Axles (Both Large Diameter Bars) - 2009-2015 Cadillac CTS-V
$1,699.98
$1,529.98
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