Best Jet Ski Exhaust System Upgrades for Kawasaki 650 and 900 Models
Getting the right jet ski exhaust system matters for performance, reliability, and maintenance. This guide highlights five compatible exhaust components and gaskets suitable for Kawasaki 650/900-class PWC models, including stand-up and sit-down styles. The selections are best for enthusiasts who want better expansion-chamber performance, durable gaskets, and reliable replacements. Use the table below to compare key options at a glance.
| Product | Brand | Best For |
|---|---|---|
| Exhaust Gasket For Kawasaki 650 X2 SX Jet Ski | Rareelectrical | Owners replacing exhaust gaskets on 1986-1988 X2 and 1987 SX 650 |
| Exhaust Gasket Repair Kit For Kawasaki Jet Ski 1100/Ultra 130 | Camoo | Comprehensive gasket set for multiple 1996-2004 models |
| Exhaust Coupler Replacement 92059-3767 | TITAN 757 PERFORMANCE | Better seal and compatibility on 650 X2/SX Jet Mate families |
| Exhaust Gasket For Kawasaki SX 650 / X2 650 | Rareelectrical | Original-style gasket replacement for 1986-1988 Kawasaki 650s |
| Exhaust Manifold Gasket For 2003-2009 Jet Ski STX/Ultra Lx | Rareelectrical | 4-stroke 1200-1500cc manifold-to-head sealing |
RAREELECTRICAL Exhaust Gasket For Kawasaki 650 SX/X2 1986-1988
Reference: Kawasaki 650 (635cc) 2-cylinder, 2-stroke. This gasket kit is designed for X2 650 (1986-1988) and SX 650 (1987) stand-up and sit-down models, delivering a tuned expansion chamber with waterbox compatibility. Best for classic Kawasaki two-stroke restorations or performance rebuilds that require OEM-style fitment. A potential limitation is fitment verification; confirm the OEM part number matches 11060-? or 11009-3724 family on your unit prior to purchase.
RAREELECTRICAL Exhaust Gasket For Kawasaki SX 650 / X2 650 1986-1988
This gasket targets Kawasaki 650-class PWCs with 635cc two-stroke engines, matching OEM numbers 11060-3725 and 11009-3723. It features a tuned expansion chamber with waterbox, aligning sealing surfaces and screw holes for a reliable seal. Best for users replacing multiple gaskets in a complete exhaust system refresh. A possible drawback is needing precise OEM verification due to superseded part numbers in some model years.
Exhaust Coupler Replacement 92059-3767
Replaces OE #92059-3767 and is compatible with 650 X2 (1986-1995), 650 SX (1987-1993), and 650 Jet Mate (1989-1992). Best for owners repairing the exhaust path where the coupler cracks or leaks. Choose this if your current coupler shows signs of wear; avoid if your jet ski model year falls outside the listed ranges.
RAREELECTRICAL Exhaust Manifold Gasket For 2003-2009 Jet Ski STX-12F/15F Ultra Lx
Direct replacement gasket for 4-stroke Jet Skis: STX-12F (1200cc), STX-15F (1500cc), Ultra LX (1500cc). It ensures proper manifold-to-head sealing with OEM-style dimensions. Best for owners performing a manifold gasket upgrade in late-model Kawasaki PWCs. Limitation: Verify OEM part number 11061-3713 (or 110613713) matches your unit before ordering.
RAREELECTRICAL Manifold Gasket For 2004-2009 Kawasaki STX-15F/12F Ultra Lx
Exhaust manifold gasket for 4-stroke inline configurations across STX-12F, STX-15F, and Ultra LX models. Best for a direct OEM replacement that maintains proper head-to-manifold seal. Choose this if your kit focuses on long-term leak prevention; note the 11061-3713 family numbers should align with your model year.
Buying Guide: Jet Ski Exhaust System Upgrades
What should you consider when choosing an exhaust system or gasket for a Kawasaki jet ski?
- Engine type and displacement: Ensure compatibility with 635cc two-stroke or 1200-1500cc four-stroke engines.
- Model compatibility: Verify OEM part numbers (for example, 11060-3725, 11009-3723, 11061-3713) to match your specific year and model.
- Exhaust system type: Decide between full exhaust systems with tuned expansion chambers and waterboxes vs. gasket-only replacements.
- Installation considerations: Some gaskets require precise alignment of screw holes and piston openings; prepare mounting hardware accordingly.
- Durability and material: Look for high-quality gaskets and couplers designed to withstand heat, saltwater exposure, and high HP outputs.
- Maintenance impact: Regular inspection of gaskets and couplers reduces exhaust leaks and preserves engine performance.
How to compare options quickly
- Better for complete gasket sets: Camoo exhaust gasket repair kit for multi-model coverage.
- Best for original-style replacements: Rareelectrical gasket sets with OEM-number crossovers.
- Best for performance-tight seals: Manifold and head-to-cylinder gaskets designed for 4-stroke STX/Ultra models.
- Budget-conscious: Focus on individual gaskets rather than full kits if only one seal shows wear.
Frequently Asked Questions
- Q: How do I know which gasket to order for my Kawasaki jet ski?
- A: Check the OEM part number on your current gasket or consult the service manual to confirm compatible replacements in the 11060-, 11061-, or 11009-series.
- Q: Can I install exhaust gaskets myself, or should I hire a pro?
- A: A capable DIYer can replace gaskets with proper tools and caution, but a professional can ensure proper sealing and torque specs on critical joints.
- Q: What are signs of a failing exhaust gasket?
- A: Symptoms include exhaust odor near the jet ski, visible exhaust leaks, reduced engine performance, or overheating due to leaks.
- Q: Are aftermarket gaskets reliable for Kawasaki PWCs?
- A: Reputable brands often meet or exceed OEM specs and provide precise sealing; verify compatibility with your model year.