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Engine Performance

Find parts to make your bike go fast

  • M4 Titanium RM1 Slip On 15-20 R1/R1M YA9946 picture 2 M4 Titanium RM1 Slip On 15-20 R1/R1M YA9946 picture 3

    M4 Titanium RM1 Slip On 15-20 R1/R1M YA9946

    Fits 2015-2020 Yamaha R1M4 Performance Exhaust designs and manufactures high quality exhaust systems for all popular sport bikes. They create full systems and slip-ons that are dyno-tuned with precision for optimal performance and sound. This...

    $481.00
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  • M4 Black RM1 Slip On 15-20 R1/R1M YA9942 picture 2 M4 Black RM1 Slip On 15-20 R1/R1M YA9942 picture 3

    M4 Black RM1 Slip On 15-20 R1/R1M YA9942

    Fits 2015-2020 Yamaha R1M4 Performance Exhaust designs and manufactures high quality exhaust systems for all popular sport bikes. They create full systems and slip-ons that are dyno-tuned with precision for optimal performance and sound. This...

    $371.00
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  • 2016+ KAWASAKI ZX10R INTAKE AIR DIAPHRAGM PLUG 2016+ KAWASAKI ZX10R INTAKE AIR DIAPHRAGM PLUG

    2016+ KAWASAKI ZX10R INTAKE AIR DIAPHRAGM PLUG

    Kawasaki ZX10R Air Intake Plug Kit. Eliminate the stock noise reduction flap, diaphragm, hose and solenoid when not needed on race bikes. Boost preformance, throttle reponse, and power. Use this kit to cover hole left in intake scoop when diaphragm is...

    $14.99
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  • M4 GP19 Black slip-on BM9132-GP19 M4 GP19 Black slip-on BM9132-GP19

    M4 GP19 Black slip-on BM9132-GP19

    Black GP Slip-On with GP19 Style End Cap 304 Stainless Steel with Black Ceramic Coating Will Fit Stock Exhaust or M4 Header Kit Retains Stock CAT Stage 1 Q1 and Stage 2 Q3 Quiet Inserts Available (sold separate)   For complete system us header kit...

    $399.00
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  • M4 Stainless Steel Header Kit BM9100 M4 Stainless Steel Header Kit BM9100

    M4 Stainless Steel Header Kit BM9100

    304 Stainless Steel Racing Header Assembly Fits Stock Canister, M4 Slip-On’s or Any Aftermarket Slip-On Saves 15 lbs Over Stock Big Time Performance Gains Equal to or Greater Than Other Top Exhaust Brands Features 3 Scavenging Equalizer Tubes Comes with...

    $809.00
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  • M4 Full System GP Black SU6232-GP19 M4 Full System GP Black SU6232-GP19

    M4 Full System GP Black SU6232-GP19

    Weight Savings: 10.7 lbs Valve Removal : Yes Removes CAT: Yes Comes with 18mm O2 bung and M12 Adapter For Stock Sensor Probe +9 HP Over Stock Re-mapping Required: No Comes with Q1 Quiet Insert Installed. Stage 2 Q3 Sold...

    $997.00
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  • M4 GP Black Slip-on SU6212-GP19 M4 GP Black Slip-on SU6212-GP19

    M4 GP Black Slip-on SU6212-GP19

    Saves 2.6 lbs Compared To Stock Does Not Remove Exhaust Valve No Re-Mapping Required Does Not Remove CAT Quiet Insert Compatible Stage 1 Q1 Quiet Insert Sold Separately Q3 Stage 2 Quiet Insert Sold Separately Stainless Steel Ceramic Coated Black  

    $368.00
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  • Ninja 400 ECU Flash - FM0087 Dyno Run

    ECU FLASH 2018+ NINJA 400 FM0087

    ECU Flash for 2018+ Ninja 400Engine - Stock, Exhaust - KA4024, Air Filter - Stock/Aftermarket Developed with the M4 Exhaust KA4024 using 93 (avg) octane rating. Other Full exhaust systems may also be used, although gains and fueling my not be as precise...

    $300.00
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  • Comparison of FM0094 & M4 KA9934-CE over Stock ECU & Stock Exhaust FM0094 & M4 KA9934-CE

    ECU FLASH 2019-20 KAWASAKI ZX10R FM0094

    ECU Flash for 2020 KAWASAKI ZX10REngine - Stock, Exhaust - KA9934-CE, Air Filter - Stock/Aftermarket Developed with the M4 Exhaust KA9934-CE. Other slip-on systems may also be used, although gains and fueling my not be as precise as with the developed...

    $300.00
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