Pro Design Domes

18CC Small Bore Domes

These domes are a perfect fit for a 350 with stock stroke & will give you approximately 193lbs of compression at sea level. These numbers will vary depending on port timing and base gasket thickness. 

20CC Small Bore Domes

These domes are a perfect fit for a 350 with stock stroke & will give you approximately 169lbs of compression at sea level. These numbers will vary depending on port timing and base gasket thickness. 

21CC Small Bore Domes

These domes are a perfect fit for a 350 with stock stroke & will give you approximately 157lbs of compression at sea level. These numbers will vary depending on port timing and base gasket thickness. 

22CC Small Bore Domes

These domes are a perfect fit for a 350 with stock stroke & will give you approximately 145lbs of compression at sea level. These numbers will vary depending on port timing and base gasket thickness. 

18CC Big Bore Domes

These domes are perfect for the 4mm-10mm Cheetah Cub packages with 68mm pistons and will give you approximately 184-201lbs of compression at sea level. These numbers will vary depending on port timing and base gasket thickness. 

19CC Big Bore Domes

These domes are perfect for the 4mm-10mm Cheetah Cub packages with 68mm pistons and will give you approximately 172-189lbs of compression at sea level. These numbers will vary depending on port timing and base gasket thickness. 

20CC Big Bore Domes

These domes are perfect for the 4mm-10mm Cheetah Cub packages with 68mm pistons and will give you approximately 160-177lbs of compression at sea level. These numbers will vary depending on port timing and base gasket thickness. 

You can return most new, unopened items within 14 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item). If you need to return an item, please contact us beforehand with the order number and information regarding the item(s) you would like to exchange. Please note, electronic items are non-refundable.

If you're purchasing one of our polished products, please use a new microfiber and a non-ammonia window cleaner to clean any fingerprints and grease. We recommend using Simi Chrome paste to touchup polished parts.