Picture 1: VR Prototype custom 13 deg race collector w/ reverse venturi. Cost $780
VS
Production VR 13 deg welded collector w/ reverse venture, Standard equipment. Strengthens the wave tuning of the primary tubes. Spreads the torque curve over a wider RPM range.
Picture 2: Internal spike and hand ported internal collector area. Further improving wave scavenging and power. |
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Properly designed and Welded X-pipe W/Wide Band 02 Bung. This design improves the resonance wave timing. Allows you to screw in a wideband 02 Air/fuel meter without custom welding |
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High flow 1200 CFM catalytic converters for little to no loss in power. Ensures you have the flow volume you need for generating big HP. |
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Hand ported flange to primary transitions. Improving flow and quality. Improves pressure wave scavenging. |