Attention:
Size S is suitable for displacement of 1.0-1.6, exhaust pipe diameter 32-43 mm Size M is suitable for displacement of 1.6-2.0, and the exhaust pipe diameter is 37-48 mm Size L is suitable for displacement of 2.0-2.4, exhaust pipe diameter 44-55 mm Size XL is suitable for displacement of 2.4 or more, and the exhaust pipe diameter is 56-85 mm
OUR GUARANTEE
We truly believe we make some of the most innovative products in the world, and we want to make sure we back that up with a risk-free ironclad 30-day guarantee.
AFTER-SALE SERVICE

Dear Customer, purchase any product here and try it in the comfort of your own home for 14 days.
If for whatever reason you're not completely satisfied, then return the product within 14 days!
