NOPRO | Original 4-1 Full Equal Length Exhaust Manifold for Mazda Miata MX5 NC

■ Perfectly equal length design for excellent exhaust efficiency
■ Uses a large diameter φ45 pipe compatible with tuning engines of MZR-LF/L3/L5
■ 4-1 layout design aimed at improving response in the mid to high speed range
■ Spring joint type that is resistant to cracking due to vibration and thermal expansion
■ Lightweight (approx. 5.4 kg) and highly durable stainless steel
■ Center pipe can be combined with genuine or aftermarket parts with catalysts of the genuine shape
■ Long stay bolts that take into account the difference in block height of LF, L3/L5 engines

Unlike many commercially available products designed for stock vehicles, NOPRO's original exhaust manifold was developed for vehicles with engine tuning such as high cams and L3/L5 engine swaps. It uses an optimal inner diameter and a 4-1 layout with perfectly equal lengths that reduces the volume error of each pipe to just a few percent, allowing it to maximize the potential of tuned engines.