Top End Gasket Kit

Refresh your engine’s top end with confidence using the Cometic Hi-Performance Top End Gasket Kit. Designed to deliver consistent sealing under high cylinder pressures, this kit helps you complete a proper top-end rebuild with the correct gaskets and seals—reducing the risk of leaks, hot spots and premature gasket failure.

When you’re replacing a piston, servicing the cylinder, or doing a head removal, using the right gasket stack is critical. This kit includes the correct base gasket, head gasket, cylinder O-rings and additional top-end specific O-rings/seals needed for removal and refit (R&R), saving time and helping ensure a clean, reliable assembly.

Key features:

• ✅ Includes correct base gasket, head gasket, cylinder O-rings and other top-end specific seals
• ✅ MLS head gasket promotes even torque load across the sealing surface for less bore distortion and improved piston ring seal
• ✅ Designed to handle high-output engines with multi-layer steel construction and durable coatings (where applicable)

Benefits of use:

• 🔹 Helps prevent coolant/combustion leakage during demanding riding
• 🔹 Supports strong, consistent performance by improving sealing and ring seal stability
• 🔹 Convenient all-in-one solution for faster, more accurate top-end service

Technical specifications:

• 📌 Brand/Manufacturer: Cometic
• 📌 Vendor part number: C3803
• 📌 Bore size: 78.00 mm (3.070")
• 📌 Material: MLS (Multi-layer Steel)
• 📌 Thickness: 0.58 mm (0.023")
• 📌 Type: Top End (Kit)
• 📌 Engine type: 2-Stroke, 4-Stroke
• 📌 Made in the USA

Why choose this gasket kit?

• ⭐ Built for riders who demand dependable sealing on high-performance engines
• ⭐ Purpose-made kit content helps avoid missing seals during reassembly
• ⭐ A proven aftermarket choice for rebuild quality and reliability