Overview Reviews Product Description GY6 BIG BORE CRANKCASE ASSEMBLY FOR 57mm, 61mm, 63mm CYLINDER BORE WITH 54mm STUD SPACING GY6 STORE EXCLUSIVE CUSTOM BIG BORE ENGINE CASE FOR GY6 150cc LONG CASE ENGINE. WE MACHINE THESE IN MATCHED PAIRS OURSELVES! THEY ARE BORED TO FIT UP TO A 63mm PERFORMANCE CYLINDER KIT. GO BIG. CASES ARE MATCHED RIGHT SIDE AND LEFT SIDE, AND STAMPED WITH A SERIAL NUMBER TO MAKE SURE YOU HAVE A PERFECTLY MATCHED SET. CHECK OUT THE FOLLOWING CYLINDER KITS THAT WILL WORK WITH THESE CASES ON A GY6 150cc ENGINE: 57.4mm CAST IRON 59mm CAST IRON 61mm CAST IRON 63mm CAST IRON 58.5mm CERAMIC 61mm CERAMIC 62mm CERAMIC Product Videos Custom Field Product Reviews Write a Review Write a Review × GY6 STORE GY6 BIG BORE CRANKCASE ASSEMBLY FOR 58mm, 61mm, 63mm CYLINDER BORE *54mm SPACING* Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *
Quick view Details GY6 STORE GY6 172cc BIG BORE KIT (61mm BORE) *54mm STUD SPACING* MSRP: Now: $69.95 Add to Cart SALE Quick view Details UNIVERSAL PARTS | sku: 164-310 180cc *63mm BORE* BIG BORE CYLINDER KIT FOR 150cc GY6 ENGINES (54mm SPACING) MSRP: $79.99 Was: $79.99 Now: $74.86 Add to Cart Quick view Details TAIDA | sku: TAIDA-61-HEAD TAIDA RACING CYLINDER HEAD GY6 (58.5mm / 61mm / 63mm) BORE *54mm STUD SPACING* MSRP: Now: $114.95 Choose Options Quick view Details TAIDA | sku: GY6-01054-61w TAIDA 172cc (61mm BORE) GY6 CYLINDER SET *54mm STUD SPACING* MSRP: Now: $114.95 Choose Options Quick view Details TAIDA | sku: GY6-01054-63 TAIDA 180cc - 206cc (63mm BORE) GY6 CYLINDER SET WITH *54mm SPACING* MSRP: Now: $110.95 Choose Options SALE Quick view Details NCY | sku: 1100-1408 NCY GY6 CYLINDER GASKET SET (63mm BORE) 180cc *54mm SPACING* MSRP: $14.00 Was: $14.00 Now: $13.25 Add to Cart Quick view Details NCY | sku: 1100-1276 NCY PERFORMANCE GY6 CYLINDER GASKET SET (61mm BORE) 172cc *54mm SPACING* MSRP: Now: $9.95 Add to Cart Quick view Details TAIDA TAIDA PERFORMANCE GY6 172cc CYLINDER GASKET SET (61mm BORE) 54mm SPACING MSRP: Now: $9.95 Add to Cart
SALE Quick view Details UNIVERSAL PARTS | sku: 164-310 180cc *63mm BORE* BIG BORE CYLINDER KIT FOR 150cc GY6 ENGINES (54mm SPACING) MSRP: $79.99 Was: $79.99 Now: $74.86 Add to Cart
Quick view Details TAIDA | sku: TAIDA-61-HEAD TAIDA RACING CYLINDER HEAD GY6 (58.5mm / 61mm / 63mm) BORE *54mm STUD SPACING* MSRP: Now: $114.95 Choose Options Quick view Details TAIDA | sku: GY6-01054-61w TAIDA 172cc (61mm BORE) GY6 CYLINDER SET *54mm STUD SPACING* MSRP: Now: $114.95 Choose Options Quick view Details TAIDA | sku: GY6-01054-63 TAIDA 180cc - 206cc (63mm BORE) GY6 CYLINDER SET WITH *54mm SPACING* MSRP: Now: $110.95 Choose Options SALE Quick view Details NCY | sku: 1100-1408 NCY GY6 CYLINDER GASKET SET (63mm BORE) 180cc *54mm SPACING* MSRP: $14.00 Was: $14.00 Now: $13.25 Add to Cart Quick view Details NCY | sku: 1100-1276 NCY PERFORMANCE GY6 CYLINDER GASKET SET (61mm BORE) 172cc *54mm SPACING* MSRP: Now: $9.95 Add to Cart Quick view Details TAIDA TAIDA PERFORMANCE GY6 172cc CYLINDER GASKET SET (61mm BORE) 54mm SPACING MSRP: Now: $9.95 Add to Cart
Quick view Details TAIDA | sku: GY6-01054-61w TAIDA 172cc (61mm BORE) GY6 CYLINDER SET *54mm STUD SPACING* MSRP: Now: $114.95 Choose Options Quick view Details TAIDA | sku: GY6-01054-63 TAIDA 180cc - 206cc (63mm BORE) GY6 CYLINDER SET WITH *54mm SPACING* MSRP: Now: $110.95 Choose Options SALE Quick view Details NCY | sku: 1100-1408 NCY GY6 CYLINDER GASKET SET (63mm BORE) 180cc *54mm SPACING* MSRP: $14.00 Was: $14.00 Now: $13.25 Add to Cart Quick view Details NCY | sku: 1100-1276 NCY PERFORMANCE GY6 CYLINDER GASKET SET (61mm BORE) 172cc *54mm SPACING* MSRP: Now: $9.95 Add to Cart Quick view Details TAIDA TAIDA PERFORMANCE GY6 172cc CYLINDER GASKET SET (61mm BORE) 54mm SPACING MSRP: Now: $9.95 Add to Cart
Quick view Details TAIDA | sku: GY6-01054-63 TAIDA 180cc - 206cc (63mm BORE) GY6 CYLINDER SET WITH *54mm SPACING* MSRP: Now: $110.95 Choose Options SALE Quick view Details NCY | sku: 1100-1408 NCY GY6 CYLINDER GASKET SET (63mm BORE) 180cc *54mm SPACING* MSRP: $14.00 Was: $14.00 Now: $13.25 Add to Cart Quick view Details NCY | sku: 1100-1276 NCY PERFORMANCE GY6 CYLINDER GASKET SET (61mm BORE) 172cc *54mm SPACING* MSRP: Now: $9.95 Add to Cart Quick view Details TAIDA TAIDA PERFORMANCE GY6 172cc CYLINDER GASKET SET (61mm BORE) 54mm SPACING MSRP: Now: $9.95 Add to Cart
SALE Quick view Details NCY | sku: 1100-1408 NCY GY6 CYLINDER GASKET SET (63mm BORE) 180cc *54mm SPACING* MSRP: $14.00 Was: $14.00 Now: $13.25 Add to Cart
Quick view Details NCY | sku: 1100-1276 NCY PERFORMANCE GY6 CYLINDER GASKET SET (61mm BORE) 172cc *54mm SPACING* MSRP: Now: $9.95 Add to Cart Quick view Details TAIDA TAIDA PERFORMANCE GY6 172cc CYLINDER GASKET SET (61mm BORE) 54mm SPACING MSRP: Now: $9.95 Add to Cart
Quick view Details TAIDA TAIDA PERFORMANCE GY6 172cc CYLINDER GASKET SET (61mm BORE) 54mm SPACING MSRP: Now: $9.95 Add to Cart