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I have been digging and digging trying to find the high altitude exhaust valve spring for the pro and can't seem to find it... Does anyone know a part number or what model sled it's off of? I'm hearing a dragon is what it's from but I don't know for sure what color
Mike,
Marks got most every color spring in stock. You need to pick the one that you want to run, I think I went with yellow it is the second from the lightest.
1 Blue 4/ 6
-2 Orange 5.5/ 8.3
-3 Pink 4.7/ 7.1
-4 Purple 3.1/ 4.7
-5 Yellow 2.4/ 3.6
-6 White 1.6/ 2.8