YP100 Variator Roller (15x12)

Brand: Mortch Motor
Product Code: MIYP100-5031

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Weight: 0.04kg

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⚙️ Yamaha 100 Roller Weights

📦 Part Number: MIYP100-5031

⚙️ 6-Piece Set · JOG100 Fitment · Special Plastic Coating

📍 Installation Position: CVT Transmission · Variator

✅ Wear-Resistant Coating · Precision Weight · Ready-to-Fit · Multiple Weights Available

📋 Product Overview

This product is a set of Yamaha 100 Roller Weights, part number MIYP100-5031. This is a 6-piece replacement roller weight set designed for JOG100 and GY6 series scooter CVT transmissions — a core component for drivetrain tuning and maintenance.

Roller weights are key components of the CVT (Continuously Variable Transmission) system. They control the clamping force of the variator pulley based on engine RPM, enabling seamless gear ratio changes. With accumulated mileage, roller weights develop flat spots due to wear, causing sluggish CVT response, poor acceleration, or reduced top speed. These roller weights feature a special wear-resistant plastic coating for extended service life. Roller weights are used for fine tuning your scooter to get the most out of what you need. Please select the appropriate weight for your riding needs.

✅ Quality Assurance: Manufactured from high-quality materials with diameter and weight precision meeting original standards, ensuring perfect fitment in the variator and smooth, reliable CVT performance.

📐 Specifications

🔖 Part Number: MIYP100-5031

🏷️ Product Name: Roller Weights / Variator Rollers

📦 Package Quantity: 6 Pieces / Set

🧪 Surface Treatment: Special Wear-Resistant Plastic Coating

📍 Installation: CVT Transmission · Variator

🏍️ Compatible Models

These Roller Weights (MIYP100-5031) are compatible with the following brands and models (50cc / 100cc scooters):

APRILIA

AMICO 50 96-98
AMICO LX-SPORT 50 92-93
AREA 51 50 98-00
GULLIVER 50 95-98
RALLY 50 Mar-95
SCARABEO 50 Jun-93
SCARABEO I.E. 50
SCARABEO 100
SONIC 50 Jul-98

ATALA

CAROSELLO 50 96-98

BENELLI

491 GT 50 98-99
491 RR 50 98-01
491 ST 50
K2 LIQUID COOLED 50 99-01
NAKED 50 02
PEPE 50 99-01
SPORT RACING 50

BETA

ARK AIR 50 96-08
ARK LC 50 96-03
ELKON 50 99-03
QUADRA CHRONO 50 96-99
TEMPO 50 94-95

BSV

AX 50cc
GZ 50cc

CAGIVA

CITY 50cc
PASSING 50cc

FANTIC

BIG WHEEL 50cc

GARELLI

PONY 50cc
PONY RACING 50cc
SR 50cc

ITALJET

DRAGSTER 50cc
BAZOOKA 50cc
PISTA 50cc All models
SCOOP 50cc
REPORTER 50cc
TORPEDO 50cc

LEM

FLASH 50cc
GHIBLI 50cc
TORNADO 50cc

MALAGUTTI

CENTRO BASE 50 93-94
CENTRO SL 50 94-98
CENTRO SL KAT 50 99-00
CROSSER CR1 50 95-98
F10 JET LINE 50 92-98
F10 KAT 50 99-00
F10 RST EU1 50 01-02
F10 RST EU2 50 02-06
F12 ARIA RST EU2 50 06
F12 PHANTOM 50 94-98
F12 PHANTOM EU1 50 99-00
F12 PHANTOM LC 50 94-98
F12 PHANTOM LC RST EU1 50 01-02
F12 PHANTOM LC RST EU2 50 02
F15 FIRE FOX 50 05-06
YESTERDAY – EURO 50 97-00

MBK

BOOSTER 50 (Various years)
BOOSTER NAKED 50 03
BOOSTER SPIRIT 50 (Various)
BOOSTER TRACK 50 96-98
EVOLIS 50 94-95
FIZZ 50 94-95
FLIPPER 50 98-04
FORTE 50 94-96
MACH G 50 02-04
NITRO 50 97-04
NITRO JAGUAR 50 04
OVETTO 50 97-04
SORRISO 50 91-95
STUNT 50 00-02
BOOSTER 100 99-01
NITRO 100 00-02
OVETTO 100 00-02

MOTRON

STING 50cc
SYNCRO 50cc
THUNDER 50cc

YAMAHA

AEROX 50 97-10
AEROX R 50 99-00
AXIS 50 95-96
BREEZE 50 94-95
BW'S 50 03-10
BW'S BUMP 50 97-98
BW'S NAKED 50 03/09
BW'S NEXT GEN. 50 97-06
BW'S ORIGINAL 50 97-03
BW'S R 50 01
CR Z 50 91-95
CT SS 50 92-95
CTS 50 90-95
JOG R 50 02-10
NEO'S 50 97-10
SLIDER 50 00-02
SPY 50 95-98
WHY 50 98-05
AEROX 100 00-02
BW'S 100 99-01
NEO'S 100 99-02

📌 Fitment Note: These roller weights are widely compatible with 50cc and 100cc scooter CVT transmissions. Before installation, please confirm your original roller diameter (typically 16mm or 17mm) and weight specification. If your specific model is not listed, please contact us with your vehicle details for compatibility verification.

🔧 Tuning Tips

🏁 Light Rollers — Good for quick acceleration, stop-and-go city riding, and hills, but you will lose top end speed.

🚀 Heavy Rollers — Will give you a higher top end speed (long roads) but you will lose low end acceleration.

💡 Selection Guide:
• If you're a heavy person (>75kg) or have a stock motor, you will want to lean towards the lighter rollers.
• If you are a light person (<65kg) or you have a big bore kit, you will want heavier rollers.

⚙️ Product Features

🧪 Special Plastic Coating: Surface features a wear-resistant engineering plastic coating with low friction coefficient for extended service life and reduced variator wear.
⚖️ Precision Weight: Each roller weight is manufactured with strict weight tolerance within ±0.1g for smooth, consistent CVT performance.
🔧 Ready-to-Fit: 6-piece set, ready for installation right out of the box — no additional preparation needed.
🔄 Multiple Weight Options: Available in various weight specifications to suit different riding styles and tuning preferences.

✅ Typical Signs That Roller Weight Replacement Is Needed:
• Engine RPM rises quickly during acceleration but vehicle speed increases slowly.
• Jerky take-off or uneven CVT operation.
• Noticeable drop in top speed.
• Visual inspection reveals flat spots, cracks, or significant wear on the roller surface.
• Preventive replacement per maintenance schedule (typically every 8,000-10,000 km).
Replacing worn roller weights promptly restores CVT performance, improves acceleration response, and enhances fuel economy.

✅ Installation Tips:
1. Remove the CVT cover and take out the variator assembly.
2. Remove old rollers from the variator ramps and clean the ramps of oil and debris.
3. Install new rollers into the variator ramps in the correct orientation (pay attention to directional marks).
4. Reassemble the variator and tighten the retaining nut to OEM torque specifications.
5. Always use a full set of 6 rollers with the same weight — do not mix different weights.
Professional installation by a qualified technician is recommended. Improper installation may cause CVT malfunction or drivetrain damage.

⚠️ Important Notice: This product is a set of Yamaha 100 Roller Weights, part number MIYP100-5031. Please confirm the required roller weight (in grams) before ordering. Different models may require different roller diameters and weights. We recommend consulting your original specifications or a professional technician. Images are for reference only; actual product may vary.

🔧 Compatibility Notice

Please verify that this part fits your specific vehicle model and year. Many vehicles share similar names but use different components depending on year or market region.
We strongly recommend cross-checking with your vehicle's owner's manual or contacting us for confirmation before placing your order.

📄 Product Disclaimer

Product images, measurements, and descriptions are for reference only. Slight variations in color or appearance may occur due to manufacturing batches or photography lighting—functional specifications remain identical to the ordered part.
Professional installation is mandatory. Mortch Motor assumes no liability for damages, injuries, or losses resulting from improper installation, misuse, unauthorized modification, or abnormal operation.

💰 Import Duties & Taxes

All listed prices EXCLUDE shipping costs, import duties, taxes, and customs clearance fees. These charges (if applicable) are determined and collected by your local customs authority and are solely the buyer's responsibility.
In case of return due to unpaid duties/taxes or refusal to clear customs, the buyer shall bear the original shipping cost, return shipping fees, and any associated administrative charges deducted from the refund.

📌 Order Confirmation: By completing your purchase, you acknowledge that you have read, understood, and agreed to all terms above. For any questions, please contact our support team prior to ordering.

Tags: Plate assy of Drive, Variators, flywheel