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NM Engineering

To our dedicated patrons and newest customers, Join us in celebrating our 45th Anniversary! Our website showcases the newest and most innovative performance parts in our industry.

The Neumann Family started Automotive Performance Systems, Inc. in 1975, with an ambition to offer the best, highest quality performance parts and provide the most dedicated customer service. Today we are still working hard to meet your needs and exceed your expectations in defining performance; our total commitment and tradition lives on.

Many aftermarket companies have been bought, sold or have been consolidated with others, while we remain independent and continue to be family owned. Those companies answer to majority owners, board members, or Wall Street – people who usually are not remotely interested in cars.

Automotive Performance Systems, Inc. answers to you - the automotive enthusiast. Our family and our own NEUSPEED® product line will not sacrifice quality to reduce costs. All our parts are designed, engineered, and manufactured with a special pride no longer seen; after all, it’s got our name on it! We continue to pay careful attention to every detail, and we are committed to specialize and build the best products available.

PCV Heater Delete Kit | N18 $39.95 USD

Rear Exhaust Tunnel Brace • F54/F60 $49.00 USD

PCV Catch Can Hose Kit | N18 $149.95 USD

HI-FLO Air Intake Kit • F-Chassis $329.95 USD

Shifter Assembly Box Cover • R-Chassis $49.95 USD

Short Shift Adapter • F54/F55/F56/F57 $69.95 USD

HI-FLO Air Induction Kit | N18 • Non-US R55/R56/R57/R58/R59 From $429.95 USD

Stainless Steel Brake Lines • F54/F60 From $94.50 USD

Stainless Steel Brake Lines • F56 LCI2 GP From $94.50 USD

Anti-Sway Bar Billet End Links | Front • F55/F56/F57 $289.95 USD

PCV Catch Can Fitting & Hose Kit | N14 $149.95 USD

Anti-Sway Bar Bushing Kit | 25mm • F-Chassis $19.95 USD

Anti-Sway Bar Bushing Kit | Rear 22mm • F-Chassis $19.95 USD

Aluminum Control Arms | Rear • F-Chassis From $449.95 USD

Billet Aluminum Tie-Bar | Front • F55/F56/F57 $399.95 USD

HI-FLO Turbo Air Charge Pipe • R-Chassis $189.95 USD

Billet Aluminum Catch Can | N14 • R55/R56/R57/R58/R59 $399.95 USD

Billet Aluminum Catch Can | N18 • R55/R56/R57/R58/R59 $399.95 USD

Boost Sensor Tap • R-Chassis $59.95 USD

Boost Sensor Tap • F-Chassis $59.95 USD

HI-FLO Turbo Discharge Pipe • R-Chassis $279.95 USD

Torque Arm Insert • R55/R56/R57/R58/R59 $59.95 USD

Torque Arm Insert • R60/R61 $59.95 USD

Power Module • F-Chassis $399.95 USD

HI-FLO Air Induction Kit | N14 • R-Chassis From $429.95 USD

HI-FLO Air Induction Kit | N18 • R-Chassis From $469.95 USD

HI-FLO Air Intake Kit | N18 • R-Chassis $259.95 USD

Titanium Turbo Heat Shield • R-Chassis $149.95 USD

Turbo Oil Line • R-Chassis $49.95 USD

Downpipe-Back Exhaust System • F56 $1,199.95 USD

Downpipe-Back Exhaust System • F54/F60 $1,299.96 USD

Anti-Sway Bar Billet Clamp & Bushing Kit | Rear • F-Chassis From $129.95 USD

Aluminum Control Arms | Rear • R-Chassis From $449.95 USD

Billet Aluminum Tie-Bar | Front • R55/R56/R57/R58/R59 $399.95 USD

Anti-Sway Bar Billet End Links | Front• R55/R56/R57/R58/R59 $289.95 USD

Anti-Sway Bar Billet End Links | Rear • R55/R56/R57/R58/R59 $189.95 USD

Anti-Sway Bar End Links | Rear • F-Chassis $159.95 USD

Anti-Sway Bar Billet Clamp & Bushing Kit | Rear • R-Chassis $129.95 USD

Anti-Sway Bar Bushing Kit | 22mm • R-Chassis $19.95 USD

Anti-Sway Bar | Rear 22mm • R60/R61 $349.95 USD

RSα Lowering Springs Kit • R60/R61 $299.00 USD

RSα Lowering Springs Kit • F55/F56/F57 $299.00 USD

Anti-Sway Bar | Rear 25mm GT • F55/F56/F57 $399.95 USD

Anti-Sway Bar | Rear 25mm GT • F54/F60 $399.95 USD

Stainless Steel Brake Lines • R55/R56/R57/R58/R59 From $94.50 USD

Stainless Steel Brake Lines • R60/R61 From $94.50 USD

Stainless Steel Brake Lines • F55/F56/F57 From $94.50 USD