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These sprockets convert 45" engines to use a Big Twin doublerow primary chain with our ‘Project 45’ frames. Install a 4-speed Big Twin transmission into the frame using the included mounting plate.... aligns perfectly with 1936–1964 OEM mainshafts. 45SPK20 20-tooth 45SPK22 22-tooth 45SPK24 24-tooth
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🇺🇸 Ship from USA · On Agora since 2024
$85.95