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The 12.80mm pistons are a slightly smaller diameter which allow more ‘Blow By’ around the periphery of the piston. This changes the feel of the shock dampening and allows us to run smaller hole piston setups with the peripheral dampening taking on more of the work. The team have found these very good on bumpy tracks and medium to low grip conditions. The piston is a classic blank so you can drill it to any hole combination you like.
