APE Stainless Steel Exhaust Valves for Kawasaki STX, SX-R & Ultra Series - 98181NC
98181NC
This part works on its own. A race-tested custom tune is optional and can add a little more from your setup.
Learn about our tunes → · Not sure? Call 786-465-5150
APE Stainless Steel Exhaust Valves for Kawasaki STX, SX-R & Ultra Series - 98181NC
APE stainless steel exhaust valves are built for Kawasaki four-stroke PWC engines that see more heat and RPM than stock parts tend to handle over time. These valves fit Kawasaki STX, Ultra, and SX-R applications plus select Fast PowerSports hulls using the same platform, giving you a stronger exhaust-side valve material for rebuilds, hard-use riding, and engine work focused on long-term durability.
These exhaust valves use Inconel-based stainless steel construction for better resistance to exhaust-side heat in demanding conditions. That matters on skis that spend long periods at sustained RPM, see modified setups, or get ridden hard for extended sessions. If you are freshening a cylinder head, replacing worn exhaust valves, or doing a full rebuild while the engine is apart, this is the kind of valvetrain part that makes sense to handle now instead of later.
Does not fit models not listed below.
Installation is not a basic bolt-on job. Valve replacement requires cylinder head disassembly, inspection of valve seats and guides, and correct reassembly with the proper clearances. If you are pairing these valves with other valvetrain parts, make sure the rest of the combination matches your build plan before final assembly. This is a service part aimed at riders and builders who want better heat resistance and durability where the engine sees the most thermal load.
✅ Compatible Models 🔽
Fast PowerSports
- F16 (2025-2026)
- GP1 (2023-2026)
- GP1R (2023-2026)
Kawasaki
- STX-160LX (2020-2026)
- STX-160X (2020-2026)
- Ultra 160LX (2023-2026)
- Ultra 160LX-S (2023-2026)
- Ultra 310LX-S (2022-2026)
- Ultra 310LX (2014-2026)
- Ultra 310X (2014-2025)
- STX-160 (2020-2024)
- Ultra 310R (2014-2022)
- Ultra LX (2007-2022)
- STX-15F (2004-2020)
- Ultra 310X SE (2014-2020)
- SX-R 160 (2024-2026)
- SX-R 1500 (2017-2026)
- Ultra 300LX (2011-2013)
- Ultra 300X (2011-2013)
- Ultra 250X (2007-2008)
- Ultra 260X (2009-2010)
- Ultra 260LX (2009-2010)
Not sure about your ski? Use the fitment finder on this page or call/text 786-465-5150.
➕ Performance Benefits 🔽
- Heat resistance: Inconel-based stainless steel stands up better to exhaust-side heat in hard-running four-stroke PWC engines.
- Built for harsh use: A solid choice for high RPM riding, aggressive use, and engines that see demanding fuel and temperature conditions.
- Good rebuild upgrade: Works well when replacing worn stock valves during a head service or full engine rebuild.
⚙️ Technical Specifications 🔽
| Part # | 98181NC |
| Brand | APE |
| Replaces OEM # | 12005-0713, 12005-0795, 12005-1005, 12005-0760 |
| Fitment | Fast PowerSports and Kawasaki. Full model and year list under Compatible Models above. |
| Fitment exclusions | Does not fit models not listed above. |
| Material | Inconel-based stainless steel |
| Install notes | Cylinder head disassembly and valvetrain setup required |
❓ FAQs & Why Choose Us 🔽
Will this fit my ski?
It fits Fast PowerSports: F16 2025-2026, GP1 2023-2026, GP1R 2023-2026; Kawasaki: STX-160LX 2020-2026, STX-160X 2020-2026, Ultra 2007-2026, STX-160 2020-2024, STX-15F 2004-2020, SX-R 2017-2026. If you are not sure about your exact setup, call 786-465-5150 before ordering.
Do I need a tune?
No tune is typically required for exhaust valve replacement by itself. This is a valvetrain service part, not a fuel, boost, or full exhaust system change.
Why Buy From Cabrera MotorSports?
- Fast Shipping: We ship incredibly fast from FL so you can get back on the water.
- Expert Support: We ride and race these exact parts on our own builds. We race what we sell!
We race what we sell. We race and wrench on these platforms ourselves, so your fitment and setup questions get answered by a racer, not a call center.
