Quick view Compare Add to Cart The item has been added Quasi Speed Small Bore 4 Hole Split Hole Size Piston SKU:QS-5027 MSRP: Was: Now: $24.95 Small bore piston with o-rings. 4 hole with 2 different sized holes. Works best on rougher tracks. Comes in a set of 4. Formerly GFR-4075 and 57-1258 Add to Cart