Genuine Buddy 50 / Roughhouse 50 Stage 2 Performance Kit

Genuine Buddy 50 / Roughhouse 50 Stage 2 Performance Kit. A new replacement part designed to help your scooter run safely and reliably. Made to fit Genuine Buddy 50, Genuine Buddy, Genuine Roughhouse 50, and Genuine Roughhouse.

About this kit

Upgrade your Genuine 50cc scooter with this full Stage 2 Performance Kit. It builds on the Stage 1 parts and adds a 72cc big bore cylinder, aimed at improving both low-end and top-end performance. The components are matched to work together as one system, and buying them as a kit is 10% cheaper than purchasing each part separately.

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.

What's Included

• 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

Specs

• 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

Fits These Models

• 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

Specs

• 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

Fits These Models

• 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

Key Details

• Fits: Genuine Buddy 50 (all years) and Genuine RoughHouse 50 with 139QMB Minarelli horizontal engine
• Condition: New

Compatibility

Fits:

• 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

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