Genuine Buddy 50 / Roughhouse 50 Stage 2 Performance Kit

Genuine Buddy 50 / Roughhouse 50 Stage 2 Performance Kit. A new replacement part that helps keep your scooter running safely and reliably. Built to fit Genuine Buddy 50, Genuine Buddy, Genuine Roughhouse 50, Genuine Roughhouse.

Compare it with your original part and confirm your model before ordering.

Product details

Max out your Genuine 50cc scooter with this complete Stage 2 Performance Kit. Building on the Stage 1 foundation, this kit adds the 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 — Performance Pipe | Genuine Buddy 50, RoughHouse
• 1200-1053 — 1500 RPM Compression / Contra Spring | 139QMB
• PRCK1 - 72cc Big Bore Kit
• Roll16x13 — 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: performance expansion pipe
• Contra Spring: 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: performance expansion pipe
• Contra Spring: 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

Specifications

• Fits: Genuine Buddy 50, Genuine Buddy, Genuine Roughhouse 50, Genuine Roughhouse
• Condition: New

Fitment check

Compare this part with your original before ordering: match the size, connector or part number, and the position on your scooter. Not sure it fits? Contact us with your scooter's make, model and year and we'll confirm.

Shop more: Genuine Buddy Parts · Genuine Scooter Parts · Scooter Parts