The gold-standard exhaust upgrade for the air-cooled 911. SSI heat exchangers are fully stainless steel — they won't rust out like the originals, they flow better, and they deliver strong, functional cabin heat. A buy-once, restoration-grade investment sold as a matched left/right pair.
Fits carbureted and CIS Porsche 911. SSI part 91-911SSI. Confirm engine/induction spec at checkout.
