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GFB Whistling Trumpet (suits all valves) - 5702
Go Fast Bits
MSRP: $44.90$44.17The 5702 can be used in place of the standard trumpet on all GFB valves, and will make the whistling sound more readily than the 5701 (high boost and RPM is required to get the whistle from a 5701),...MSRP: $44.90$44.17