Overview Reviews Product Description SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS 50cc QMB139 4-STROKE 52mm, PERFORMANCE CYLINDER HEAD. INTAKE VALVE DIAMETER: 21.5mm INTAKE PORT DIAMETER: 24mm EXHAUST VALVE DIAMETER: 18.9mm EXHAUST PORT DIAMETER: 22mm VALVE LENGTH: 62.3mm (COMPATIBLE WITH 64mm SHORT VALVE STYLE HEADS) DOES NOT INCLUDE CAMSHAFT, PLEASE SEE RELATED ITEMS PLEASE NOTE: REPLACES CYLINDER HEADS WITH 64mm VALVES (SHORT VALVE STYLE) MADE IN TAIWAN Product Videos Custom Field Product Reviews Write a Review Write a Review × SSP-G SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *
Quick view Details SSP-G | sku: 169-518 SSP-G 50MM QMB139 BIG BORE CYLINDER & HEAD KIT MSRP: Now: $194.95 Add to Cart Quick view Details NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS MSRP: Now: $145.95 Add to Cart Quick view Details SSP-G | sku: 169-275 SSP-G PERFORMANCE INTAKE MANIFOLD FOR SCOOTERS 50cc - 100cc QMB139 MOTORS MSRP: Now: $40.95 Add to Cart Quick view Details SSP-G | sku: 169-514 SSP-G REPLACEMENT CASES FOR OIL COOLED 180cc BIG BORE KIT *B BLOCK* 57mm SPACING MSRP: Now: $319.95 Add to Cart Quick view Details SSP-G | sku: 169-105 SSP-G PERFORMANCE CAMSHAFT FOR SCOOTERS WITH 50cc 80cc 100cc QMB139 MOTORS MSRP: Now: $47.95 Add to Cart
Quick view Details NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS MSRP: Now: $145.95 Add to Cart Quick view Details SSP-G | sku: 169-275 SSP-G PERFORMANCE INTAKE MANIFOLD FOR SCOOTERS 50cc - 100cc QMB139 MOTORS MSRP: Now: $40.95 Add to Cart Quick view Details SSP-G | sku: 169-514 SSP-G REPLACEMENT CASES FOR OIL COOLED 180cc BIG BORE KIT *B BLOCK* 57mm SPACING MSRP: Now: $319.95 Add to Cart Quick view Details SSP-G | sku: 169-105 SSP-G PERFORMANCE CAMSHAFT FOR SCOOTERS WITH 50cc 80cc 100cc QMB139 MOTORS MSRP: Now: $47.95 Add to Cart
Quick view Details SSP-G | sku: 169-275 SSP-G PERFORMANCE INTAKE MANIFOLD FOR SCOOTERS 50cc - 100cc QMB139 MOTORS MSRP: Now: $40.95 Add to Cart Quick view Details SSP-G | sku: 169-514 SSP-G REPLACEMENT CASES FOR OIL COOLED 180cc BIG BORE KIT *B BLOCK* 57mm SPACING MSRP: Now: $319.95 Add to Cart Quick view Details SSP-G | sku: 169-105 SSP-G PERFORMANCE CAMSHAFT FOR SCOOTERS WITH 50cc 80cc 100cc QMB139 MOTORS MSRP: Now: $47.95 Add to Cart
Quick view Details SSP-G | sku: 169-514 SSP-G REPLACEMENT CASES FOR OIL COOLED 180cc BIG BORE KIT *B BLOCK* 57mm SPACING MSRP: Now: $319.95 Add to Cart Quick view Details SSP-G | sku: 169-105 SSP-G PERFORMANCE CAMSHAFT FOR SCOOTERS WITH 50cc 80cc 100cc QMB139 MOTORS MSRP: Now: $47.95 Add to Cart
Quick view Details SSP-G | sku: 169-105 SSP-G PERFORMANCE CAMSHAFT FOR SCOOTERS WITH 50cc 80cc 100cc QMB139 MOTORS MSRP: Now: $47.95 Add to Cart