HKS Hi-Power Dual Axle-Back Exhaust - Infiniti G35 / G37 / Q40 Sedan

Regular price $650.00 USD $510.00 USD

Ready To Ship! Special Order! Ships in 10+ weeks

Part # hks32003-BN001

Inspired and designed from endurance and GT racing in Japan, HKS developed its Hi-Power Exhaust system for both turbocharged and naturally aspirated applications. HKS has incorporated this new race inspired offset muffler and piping design into many street applications, which offers a greater flow and higher-PRM power gains due to the less restrictive design. This is achieved by eliminating unnecessary bends for the straightest exhaust path.

Increase the rear appearance and sound by upgrading to the HKS Dual Axle-Back Exhaust system. It is made of full SUS304 50mm piping with 115mm tips.

  • Infiniti G35 [Sedan] (2007, 2008)
  • Infiniti G37 & G37x [Sedan] (2008, 2009, 2010, 2011, 2012, 2013, 2014)
  • Infiniti Q40 [V36] (2015)


  • Dual Polished SUS304 Stainless Steel Exhaust System
  • 115mm diameter tips and 50mm diameter piping
  • Painless simple install
  • Rear Section Only Axle Back
  • Dual Exhaust System
  • Provides fuller deeper exhaust tone

Extended Information

  • Type: Dual Axle Back Exhaust
  • Piping Diameter: 50 mm
  • Tip Diameter: 115 mm
  • Material: SUS304
  • Notes: n/a
  • Warranty: HKS Manufacturing Warranty

Customer Reviews

Customer Reviews

Based on 15 reviews
Kin K. (Atlanta, GA, US)
Not impressed

This is something that is for people that don’t know anything about cars. It does not sound that much different than the stock one. It doesn’t give you any performance what so ever. Infact it makes the car have less horse power. It’s also not a cat back that would be accompanied by a downpipe and headers. I bought a HKS for my RX8 a few years ago and it was sweet. But this was embarrassing to say the least. I won’t ever buy another one by this company and I’m not doing extra work so until I buy the new one I won’t be changing it back to stock then changing it again. So I’m stuck with it. I have to now find a real cat back. One that doesn’t just bolt to the stock pipes for a little more noise. Company is nit what they use to be. It looks bad being 4 inch tips. Does not look tough just FyI

B.A. (Denver, CO, US)

The best Axel back

Daniel P. (Sacramento, CA, US)

The exhaust fits just perfect! Sounds a lot better than the stock one.

Devon M. (Atlanta, GA, US)

Worth it and it was fast

Fasha S. (Dallas, TX, US)

Faster shipping I ever seen

Luis J.H. (Rome, GA, US)
Excellent service and shipping

Fastest shipping ever

Slackerpro (Brooklyn, NY, US)

Literally the fastest shipped thing i ever got looks great easy af to install sounds great has a deep tone just a litter louder than stock but not annoying makes a big difference

Customer Questions


In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on Clearance Items, Final Sales, Special Orders, Opened, Installed, Incomplete, or Otherwise Used Products. In order to initiate a return, an RMA number must be requested and approved via e-mail.
All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).

Any processed orders that have not shipped will incur a 6% cancelation refund fee unless the product was not available to ship within a timely manner. No fee will be incurred if used as store credit.

For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.

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