# Exhaust Riser Extension 9" - Cast 316 (HDI GM R9)

9" 316 Stainless Steel Extension Riser

Suitable for Yanmar 1GM, 1GM10, 2GM, 2GM20, 2GM20F, 2GM30, 2GMF, 2QM15, 2QM20, 2YM15, 3GM, 3GM30, 3GM30F, 3GNF, 3HM, 3HM35F, 3HMF, 3JH3E, 3JH5E, 3QM30, 3YM30, 4JH2CE, 4JH2E, 4JHE, YSM12

Extends exhaust intake port by 8 inches.

Overall length of this product is 9 inches

Heavy wall 316 Stainless steel

1-1/2 BSPT thread LH / RH

Fits Mixing Elbows:

GM / GMP / GML / GM2 / JHL

For exhaust blanket go to **MATR9**

This is a HDI Marine part HDI R9.

## Details

- **Price:** 140.0 AUD
- **Vendor:** HDI Marine
- **Tags:** Sawley’s AAM Aftermarket – Exhaust Elbows Mixers & Risers – Yanmar HDI | Marine Exhaust Elbows Risers & Mixing Elbows

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 140.00 AUD | In stock |

## Images

- Exhaust Riser Extension 9" - Cast 316 (HDI GM R9)

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/exhaust-riser-extension-9-cast-316-hdi-gm-r9)
> Updated: 2026-06-23