(Please contact us before purchasing so we can send you a complete invoice total if needed thanks) Astra vxr/gsi z20 custom maifolds These manifolds are made to order to your specification. Please contact us for a lead time before ordering. Vauxhall Z20 Tubular Turbo Manifold TIG Welded Back Purged Available with 1.25 or 1.5″ Primaries Mild or Stainless Steel Flanges (V-Band available in Stainless Only) T2, T3 and Garrett V Band Turbo Flange 38mm 2 Bolt, 38/40mm V-Band and 45mm V-Band External Wastegate Welded or Cast Collector (T2 not available with Cast Collector) 2 year limited warranty subject to terms and conditions. These Manifolds are not considered Air-Con friendly. FAQ Mild or Stainless Flanges? Mild steel is more resistant to warping but more prone to corrosion. Stainless steel is more prone to warp but more resistant to warping. 1.25″ or 1.5″ Primaries? 1.25″ typically will support up to 150bhp per cylinder (up to 600bhp on a typical 4 cylinder engine). 1.5″ typically will support more than 150bhp per cylinder (600bhp+ BHP on a typical 4 cylinder engine) Welded or Cast Collector? A welded collector is typically cheaper. Our welded collectors are welded inside and out for increased durability.
Gizfab z20 tubular manifold