The H22A Ramhorn is constructed from mandrel-bent, T304 stainless steel. The Schedule 40 tubing is TIG-welded and features a T3 turbo inlet flange and accommodates most popular 38mm-40mm V-band wastegates.

The Ramhorn manifold is a direct-fit inside Prelude and most Accord chassis. The manifold will also work with H22A swaps in Civics and Integras, including H2B swaps.

  • T304 stainless steel
  • Schedule 40
  • T3 turbo inlet flange, fits up S-cover
  • Accommodates 38mm-40mm V-band wastegates


Save 25% on all in-stock throttle bodies during BLOX Racing’s annual President’s Day weekend sale. BLOX Racing big bore throttle bodies are available in cast and billet aluminum for Honda B/D/H/F and billet aluminum for Honda K-series.

BLOX Racing also manufactures throttle position sensors (TPS) and throttle body adapters, such as its RBC and K2B billet aluminum pieces.

Sale starts TODAY and ends Monday. Free shipping within the US and to all authorized military bases worldwide. Limited to stock on hand: no back orders or rain checks.