Okay so as the title shows, im having trouble checking which rear shock i can use.
I have just purchased a 2012 Nukeproof Scalp frame and im after a rear shock, the Guy i bought it off said it fits a 214mm. however is it possible to use something smaller?
The short answer is yes, it needs to be the correct size for the frame. In your case, 9.5" x 3" (240mm x 76mm).
You pretty much never want to run a different size shock than what the frame is designed for because it can mess up the geometry of the bike and prevent it from riding properly, cause excess stress on the frame which could lead to it failing, or even cause parts of the suspension linkage to collide with other parts of the frame.
The short answer is yes, it needs to be the correct size for the frame. In your case, 9.5" x 3" (240mm x 76mm).
You pretty much never want to run a different size shock than what the frame is designed for because it can mess up the geometry of the bike and prevent it from riding properly, cause excess stress on the frame which could lead to it failing, or even cause parts of the suspension linkage to collide with other parts of the frame.