Powersports Replacement Parts for 1UY-12111-01-00 1UY-12121-01-00 Intake/Exhaust Valve Kits W/Gasket For Yamaha Mod-C33C-77910

1UY-12111-01-00 1UY-12121-01-00 Intake/Exhaust Valve Kits W/Gasket For YAMAHA Intake And Exhaust Valve Kits With Gasket For YAMAHA For Bruin 350 2x4 4x4 2004-2006 Big Bear 350 YFM350FW 4x4 1999 Big Bear 400 YFM400 2x4 4x4 2000-2012 Grizzly 350 2x4 4x4 2007-2014 For Kodiak 400 2x4 4x4 1993-2002 Raptor 350 2004-2013 Warrior 350 YFM350X 1987-2004 Wolverine 350 2x4 4x4 1995-2009 Order Includes: 1 x Intake Valve: 1UY-12111-01-00 1UY-12111-00-00 Intake Valve Length: 1.57" ; 40.0 mm Intake Valve Diameter: 4.05" ; 103.0 mm 1 x Inner Valve Spring: 1UY-12113-01-00 22U-12113-00-00 Width: 0.84" ; 21.4 mm Height: 1.55" ; 39.6 mm Thickness: 0.11" ; 2.9 mm 1 x Outer Valve Spring: 1UY-12114-01-00 Width: 1.22" ; 31.2 mm Height: 1.71" ; 43.5 mm Thickness: 0.16" ; 4.25 mm 1 x Outer Valve Spring: 1J7-12119-01-00 M01-12129-00-00 Length: 0.47" ; 12.0 mm Width: 0.35" ; 9.0 mm Inner Diameter: 0.18" ; 4.7 mm Outer Diameter: 0.37" ; 9.4 mm 2 x Valve Stem Seal: 1J7-12118-00-00 Width: 0.16 " ; 4.2 mm Length: 0.37 " ; 9.5 mm Height: 0.27 " ; 7.0 mm 1 x Exhaust Valve: 1UY-12121-01-00 1UY-12121-00-00 Exhaust Valve Length: 1.33" ; 34.0 mm Exhaust Valve Diameter: 3.93" ; 100.0 mm 1x Cylinder Base Gasket : 5GH-11351-00 **

• 🔧OEM Fit & Function – Each part is designed with exact dimensions and specifications to replace factory components seamlessly.
• 🔧Heavy-Duty Materials – Crafted from premium alloys and reinforced composites to deliver long-lasting strength and reduce premature wear.
• 🔧Versatile Applications – Suitable for ATVs, UTVs, dirt bikes, snowmobiles, and outdoor power equipment used in both recreational and professional settings.
• 🧪 Rigorously Tested for Safety Validated under SAE/J3060 standards. Handles stress, heat, and vibration like OEM parts. Ensures stable brake performance and driver safety.
• 🛡️ Rigorous Quality Testing Each part undergoes strict stress, corrosion, and performance tests to meet or exceed industry standards (SAE, ISO), ensuring reliability and safety on the road.