Stage 2 Performance Kit - Genuine Buddy 50 / RoughHouse 50

Max out your Genuine 50cc scooter with this complete Stage 2 Performance Kit. Building on the Stage 1 foundation, this kit adds the NCY 72cc big bore cylinder upgrade for serious gains on both the top and bottom end. All components are tuned to work together as a system, and purchasing as a kit saves 10% versus buying the parts individually.

Voids factory warranty. For off-road and closed-course competition use only. Not EPA or CARB compliant. Not legal for use in California on pollution-controlled vehicles. Check local laws before installing.

Kit Contents

• PE32 — NCY Performance Pipe | Genuine Buddy 50, RoughHouse
• 1200-1053 — NCY 1500 RPM Compression / Contra Spring | 139QMB
• PRCK1 - NCY 72cc Big Bore Kit
• Roll16x13 — Prima Roller Weight Set (16x13mm, 6.0g, 6 pcs)
• Jetkh1 — Keihin PB Main Jets | #95, #100, #105
• Jetkh2 — Keihin Idle Jet | #42

Specifications

• Big Bore Displacement: 72 cc (47mm)
• Exhaust: NCY performance expansion pipe
• Contra Spring: NCY 1500 RPM
• Roller Weights: 16x13mm, 6.0g (6 pcs)
• Jet Kit: Keihin PB main jets #95/#100/#105 + idle jet #42
• Kit Savings: 10% vs. individual part pricing

Compatibility

• Genuine Buddy 50 (all years)
• Genuine RoughHouse 50
• Genuine Black Cat 50
• Genuine Rattler 50
• Other Minarelli-style 50cc scooters with 139QMB / Minarelli horizontal engines

Voids factory warranty. For off-road and closed-course competition use only. Not EPA or CARB compliant. Not legal for use in California on pollution-controlled vehicles. Check local laws before installing.

Jets | #95, #100, #105

• Jetkh2 — Keihin Idle Jet | #42

Specifications

• Big Bore Displacement: 70cc (Malossi iron cylinder)
• Exhaust: NCY performance expansion pipe
• Contra Spring: NCY 1500 RPM
• Roller Weights: 16x13mm, 6.0g (6 pcs)
• Jet Kit: Keihin PB main jets #95/#100/#105 + idle jet #42
• Required Separately: Exhaust gasket SKU 0500-1008
• Kit Savings: 10% vs. individual part pricing

Compatibility

• Genuine Buddy 50 (all years)
• Genuine RoughHouse 50
• Genuine Black Cat 50
• Genuine Rattler 50
• Other Minarelli-style 50cc scooters with 139QMB / Minarelli horizontal engines

California Prop 65 Warning: www.p65warnings.ca.gov

• Malossi 70cc Iron Big Bore Cylinder Kit — Increased Displacement
• NCY Performance Expansion Pipe (PE32)
• NCY 1500 RPM Contra / Compression Spring
• Prima 16x13mm 6.0g Roller Weight Set (6 pcs)
• Keihin PB Main Jets #95 / #100 / #105 + Idle Jet #42
• 10% Savings vs. Individual Part Pricing
• Complete Tuned System — All Components Work Together

Displacement: 70cc | Cylinder: Malossi iron | Exhaust: NCY performance expansion pipe | Contra spring: NCY 1500 RPM | Roller weights: 16x13mm 6.0g (6 pcs) | Jet kit: Keihin PB #95/#100/#105 + idle #42 | Required separately: exhaust gasket SKU 0500-1008

Genuine Buddy 50 (all years) | Genuine RoughHouse 50 | Genuine Black Cat 50 | Genuine Rattler 50 | Other Minarelli-style 50cc scooters with 139QMB / Minarelli horizontal engines