GY6 61mm Top End Test Gaskets - LOW GRADE

The Details ⚙️

Not sure what engine you have? This test gasket set is the easiest way to confirm compatibility before committing to a 61mm 172cc big bore kit.

There are a lot of engines that look similar to the QMJ157, especially on buggies and ATVs. Instead of guessing and risking the wrong kit, these gaskets let you physically verify fitment first.

If these gaskets line up correctly with your engine, our 172cc drop-in big bore kit will fit. Simple as that.

Test it first — save yourself the headache 🔧

What's Included 📦

• 🧱 Test base and head gaskets for 61mm (172cc) fitment verification

Important Things to Note 🚨

• These are NOT build-quality gaskets — for test fitting only.
• Designed to verify compatibility with 61mm 172cc big bore kits.
• If these fit your engine, the 172cc kit will fit.
• Commonly used for unknown engines, buggies, and ATV GY6 variants.

Not sure what engine you have? Message us — we’ll help you figure it out 👍