JOG 50 Transmission Parts

Precision design. Stable transmission. OEM-fit upgrade.

This Pulley / Variator for Yamaha JOG 50 features a 100 mm outer diameter, 18 mm inner bore, and a 14° ramp angle, delivering smooth CVT operation and reliable performance. Manufactured with precision machining, it ensures consistent power transfer and throttle response. Compatible with multiple JOG 50 engine codes, it is ideal for both maintenance and performance upgrades.

Highlights

• Ø100 mm OD / 18 mm ID — Accurate dimensions for stable CVT performance.

• 14° Ramp Angle — Balanced acceleration and top-end power delivery.

• Precision Machining — Ensures smooth roller movement and durability.

• Durable Build — Heat- and wear-resistant alloy construction.

• Wide Fitment — Fits JOG 50 engine types 3KJ / 3YK / 4JP / 4LV / 3RY / 5AU / CV50.

Product Specifications
✔ Type: Pulley / Variator
✔ Outer Diameter: Ø100 mm
✔ Inner Diameter: Ø18 mm
✔ Ramp Angle: 14°
✔ Fitment: Yamaha JOG 50 (3KJ / 3YK / 4JP / 4LV / 3RY / 5AU / CV50)
✔ Package Includes: Pulley ×1

Installation Notes

• Confirm engine code (3KJ / 3YK / 4JP / 4LV / 3RY / 5AU / CV50) before purchase.

• Use proper roller weights and drive belt to match ramp angle.

• Check variator sleeve and ramp plate for wear during installation.

• Torque to spec for stable CVT performance.

Power You Can Trust.

Lightweight Aluminum • Stylish Colors • 93mm Diameter

🌪️ Cooling meets customization.
This aluminum fan blade for JOG 50 is engineered for durability, heat resistance, and stable airflow. Weighing only 94g, it minimizes rotational load while promoting efficient CVT cooling. Available in silver, blue, yellow, and red, it’s the perfect combination of performance and style for daily riders and tuning enthusiasts.

🔹 Outer diameter: 93mm
🔹 Weight: 94g
🔹 Material: Aluminum alloy – Heat resistant & lightweight
🔹 Color options: Silver / Blue / Yellow / Red
🔹 Compatible with JOG 50 – Plug-and-play installation

Upgrade your JOG 50 with a cooling fan that keeps things cool and looks even cooler.

Longer belt travel. Smoother shift curve. Better heat control.

This Variator Kit for Yamaha JOG 50 combines a 100 mm drive pulley (14° face) with a matched ramp plate and an oversize 100 mm cooling fan. The larger working diameter increases effective belt travel for a wider ratio range, while the face geometry supports a predictable shift and steady mid-range. The fan’s spacerless hub simplifies assembly and helps keep temperatures consistent in stop-and-go riding.

Highlights

• 100 mm Oversize Pulley — Extends belt climb for broader ratio coverage and cleaner launches.

• 14° Face Geometry — Targets linear, repeatable shifting with stable belt contact.

• 100 mm Cooling Fan (Spacerless) — More airflow, steadier temps, no washer/spacer needed.

• OEM-Fit Interfaces — ID 18 mm bore and ramp profile align with stock hardware.

• Tuning-Friendly — Works with common roller weights and belts to hit your RPM band.

Product Specifications
✔ Pulley OD / ID: 100 mm / 18 mm
✔ Pulley Face Angle: 14°
✔ Fan OD: 100 mm (spacerless hub)
✔ Total Kit Weight: 415 g
✔ Type: Variator Pulley + Ramp Plate + Oversize Cooling Fan
✔ Fitment: Yamaha JOG 50
✔ Package Includes: Drive Pulley ×1, Ramp Plate ×1, Oversize Fan ×1

Installation Notes

• Verify cover clearance for the 100 mm pulley/fan and confirm belt width/length; note ID 18 mm crank fit.

• Start with current roller weights; adjust in ±0.5–1.0 g steps to reach target RPM.

• Keep pulley faces clean and dry; follow service manual on ramp-plate lubrication (do not grease belt contact areas).

• Torque the variator nut to spec; hand-rotate to confirm no rubbing, then road-test and inspect belt climb marks.

Power You Can Trust.

More air. Lower temps. Simpler install.

This Oversize Cooling Fan for Yamaha JOG 50 increases airflow through the CVT cover to help steady belt and sheave temperatures in stop-and-go riding. The 100 mm diameter boosts throughput, and the spacerless hub sets stack height correctly for clean, wobble-free running—no washer/spacer needed.

Highlights

• 100 mm Oversize Airflow — Larger sweep area circulates more fresh air through the CVT compartment.

• Heat & Glazing Control — Supports belt life and shift consistency during repeated launches.

• Spacerless Hub — Direct fit with correct stack height; eliminates washer/spacer.

• Rigid, Balanced Build — Helps maintain shape at temperature for smooth rotation.

• Daily to Light-Performance — Designed to keep feel consistent on commutes and hill climbs.

Product Specifications
✔ Outer Diameter: 100 mm
✔ Weight: 120 g
✔ Type: CVT front cooling fan
✔ Fitment: Yamaha JOG 50
✔ Package Includes: Oversize Cooling Fan ×1 (no spacer required)
Upgrade note: replaces the previous Ø93 mm aluminum fan (~94 g) that required a washer/spacer.

Installation Notes

• Match blade rotation/orientation to OEM so the fan draws air correctly.

• Verify cover clearance for 100 mm OD and confirm belt line alignment.

• Torque the variator nut to spec; hand-rotate to ensure no rubbing.

• After the first ride, inspect for contact marks and recheck fastener torque.

Power You Can Trust.

Quick Engagement • 106mm Outer Diameter • Only 440g

⚙️ Designed for smooth takeoff and efficient city riding.
This JOG 50 Lightweight Clutch delivers faster engagement and improved throttle response thanks to its 440g low-mass construction. The 106mm diameter makes it ideal for small-displacement scooters, reducing rotational inertia while maintaining consistent grip. A perfect upgrade for urban commuting or light tuning.

🔹 Outer diameter: 106mm
🔹 Weight: 440g
🔹 Fast engagement & low inertia – Improves acceleration
🔹 Engineered for JOG 50 – Reliable fit and function

Upgrade your JOG 50 with a lightweight clutch built for smoother starts and sharper power delivery.

Lightweight shell, clean bite, cooler stops.

This 2D Clutch Bell for Yamaha JOG 50 focuses on airflow and consistent engagement. The inner matte-textured surface promotes predictable pad bite, while enlarged front cutouts and side dust-release holes help move heat and eject debris for steadier feel in stop-and-go riding.

Highlights
🔹 Textured Inner Face — Matte finish supports clean, repeatable engagement.
🔹 Airflow-Oriented Cutouts — Front openings help evacuate heat.
🔹 Side Dust-Release Holes — Eject clutch dust to reduce glazing.
🔹 OEM-Fit Interfaces — Drop-in alignment with stock hardware.
🔹 Everyday to Light Tuning — Suits city riding and mild CVT setups.

Product Specifications
✔ Outer / Inner Diameter: 119.5 mm / 111.5 mm
✔ Weight: 410 g
✔ Material: Steel
✔ Fitment: Yamaha JOG 50 (also shared with JOG 90 / RS 100; confirm year/variant)
✔ Focus: Consistent bite / heat & dust management
✔ Package Includes: Clutch Bell ×1

Installation Notes

• Confirm OD/ID with clutch shoes and cover clearance.

• Inspect shoes and small springs; replace if worn or heat-cracked.

• After installation, gentle run-in; check for noise/vibration and even contact.

• Pair with healthy belt/rollers; overall CVT condition affects results.

Power You Can Trust.

Precise Belt Tracking • 115mm Diameter • 685g Weight

🛠️ Built for balance, acceleration, and reliability.
This JOG 50 sliding sheave offers stable torque conversion and smoother power transmission, thanks to its balanced 685g construction and precision-cut 115mm diameter. Engineered for efficient belt tracking and consistent performance, it’s the ideal upgrade for stock replacement or pairing with high-performance CVT components.

🔹 Outer diameter: 115mm
🔹 Weight: 685g
🔹 Stable shifting performance – Smooth acceleration and power delivery
🔹 Designed for JOG 50 CVT systems – Compatible with OEM or tuned setups

Upgrade your JOG 50 with a torque driver that ensures steady belt movement and responsive CVT control.

Stable wear. Smooth response. Direct-fit upgrade.

These Roller Weights for Yamaha JOG 50 are sized 15×12L, available in 3 g to 12 g, sold as a set of 6 pcs. Built from durable wear-resistant material, they maintain consistent performance for daily riding and basic tuning. A direct OEM replacement, suitable for both maintenance and performance adjustment.

Highlights

• 3 g ~ 12 g Options — Tune balance between acceleration and top speed.

• Size 15×12L — OEM-compatible dimensions for JOG 50 variator.

• Durable Material — Resists wear and deformation for long service life.

• Smooth Performance — Keeps CVT shifting predictable and throttle response steady.

• Complete Set — 6 pcs per pack for one full replacement.

Product Specifications
✔ Type: Roller Weights (Standard)
✔ Dimensions: 15×12L
✔ Weight Range: 3 g ~ 12 g
✔ Fitment: Yamaha JOG 50
✔ Package Includes: Roller Weights ×6

Installation Notes

• Choose weight based on acceleration vs. top speed preference.

• Always replace all 6 pcs together to avoid uneven wear.

• Confirm size before installation.

• Apply a thin layer of lubricant to variator tracks if needed.

Power You Can Trust.

Enhanced durability. Smoother response. Premium upgrade.

These A+ Roller Weights for Yamaha JOG 50 are designed for riders who demand more consistency and longer service life. Sized 15×12L and available in 3 g to 12 g, this premium set of 6 rollers offers improved wear resistance and smoother CVT performance compared to standard rollers. Ideal for both maintenance and performance tuning.

Highlights

• Premium Grade — Higher durability for extended service life.

• 3 g ~ 12 g Options — Fine-tune acceleration and top speed.

• 15×12L Size — OEM-compatible fit for JOG 50 variator.

• Smoother CVT Action — Enhances throttle response and shifting stability.

• Complete Set — 6 pcs per pack for full replacement.

Product Specifications
✔ Type: A+ Roller Weights (Premium)
✔ Dimensions: 15×12L
✔ Weight Range: 3 g ~ 12 g
✔ Fitment: Yamaha JOG 50
✔ Package Includes: A+ Roller Weights ×6

Installation Notes

• Select roller weight to balance acceleration vs. top speed.

• Always replace all 6 pcs as a set for even wear.

• Confirm roller dimensions before installation.

• Apply light lubrication to variator tracks if required.

Power You Can Trust.

Set your take-off RPM to match your ride.

These Clutch Springs let you fine-tune clutch engagement on Yamaha JOG 50. Choose from four color-coded rates to decide how early or late the clutch bites. Higher rates typically raise engagement RPM for snappier launches (after proper CVT tuning), while lower rates suit relaxed city take-offs.

Highlights
🔹 4 Selectable Rates — 1000 / 1200 / 1500 / 2000 RPM cover daily to sport setups.
🔹 Color-Coded — Blue / Orange / Yellow / Red for quick identification.
🔹 Consistent Response — Matched spring rates support predictable take-off feel.
🔹 Tuning Friendly — Pair with roller weights and contra spring to hit your RPM band.
🔹 Direct OEM Fit — Designed for JOG 50 automatic centrifugal clutches.

Product Specifications
✔ Rates & Colors: 1000 (Blue) / 1200 (Orange) / 1500 (Yellow) / 2000 (Red)
✔ Quantity: 3 pcs / set
✔ Type: Clutch shoe springs (automatic centrifugal clutch)
✔ Fitment: Yamaha JOG 50
✔ Focus: Engagement RPM control / launch feel
✔ Package Includes: Clutch Springs ×3

Installation Notes

• Replace all three springs together; do not mix different rates in one clutch.

• Actual engagement RPM varies with rollers, contra spring, shoes, bell, and tach reading.

• Use a proper spring tool; confirm hook seating and free movement after assembly.

• Road-test, then recheck for creeping, slip, or noise and fine-tune as needed.

Power You Can Trust.

Stable Belt Pressure. Smooth Shifting. Adjustable Acceleration Response.

The Driven Spring for YAMAHA JOG50 is designed for riders who demand precise CVT tuning and consistent performance. Available in four tension levels — Blue (1000RPM), Orange (1200RPM), Yellow (1500RPM), and Red (2000RPM) — this center spring adjusts pulley reaction force to fine-tune acceleration and backshift speed. Made from durable heat-treated steel, it provides stable tension and long-lasting elasticity for both street and performance setups.

🔹 Highlights

• Four RPM Options — 1000 / 1200 / 1500 / 2000 for precise CVT response tuning

• Color-Coded Design — Easy identification: Blue / Orange / Yellow / Red

• Enhanced Belt Grip — Maintains consistent drive belt pressure under load

• Smooth Downshift Control — Improves throttle recovery and speed transition

• Heat-Treated Spring Steel — Ensures lasting durability and performance stability

✔ Product Specifications

• Type: Driven Spring (Center Spring)

• RPM Rating: 1000 (Blue) / 1200 (Orange) / 1500 (Yellow) / 2000 (Red)

• Fitment: YAMAHA JOG50

• Focus: CVT tuning & acceleration balance

• Package Includes: Driven Spring ×1

🔧 Installation Notes

• Choose spring tension based on desired acceleration and backshift response

• Higher RPM springs increase takeoff force and engine braking effect

• Compatible with OEM or modified CVT systems

• Verify spring preload alignment during assembly

Power You Can Trust.

Reinforced Alloy Structure. Stable Pressure. Built for High-Temperature Performance.

This Alloy Driven Spring for YAMAHA JOG50 offers improved durability and consistent belt tension for high-performance CVT setups. Constructed from a reinforced alloy-steel blend, it maintains stable elasticity and reaction speed under heat and continuous use. Available in 1000 / 1200 / 1500 / 2000 RPM specifications, this single-color black spring provides precise tuning for both daily riding and performance builds.

🔹 Highlights

• Four RPM Options — 1000 / 1200 / 1500 / 2000 for refined transmission tuning

• Reinforced Alloy Composition — Improved heat resistance and tension stability

• Consistent CVT Response — Maintains belt pressure during acceleration and deceleration

• High Elastic Recovery — Prevents performance loss under repeated stress

• All-Black Finish — Sleek and professional look for performance applications

✔ Product Specifications

• Type: Alloy Driven Spring (Center Spring)

• RPM Rating: 1000 / 1200 / 1500 / 2000

• Color: Black

• Fitment: YAMAHA JOG50

• Focus: High-temperature durability & CVT balance

• Package Includes: Alloy Driven Spring ×1

🔧 Installation Notes

• Select desired spring rate according to tuning setup

• Suitable for OEM or upgraded CVT systems

• Higher RPM springs increase acceleration response and backshift control

• Verify preload and seating alignment during installation

Power You Can Trust.

3 Gear Ratio Options • Better Pull & CVT Balance

⚙️ Fine-tune your torque, boost your response.
This transmission gear set for JOG 50 offers three different gear ratio options — 13x34T, 14x32T, 15x31T — allowing you to optimize acceleration and mid-range power delivery. Whether you want a quicker launch or smoother gear engagement, this gear set is ideal for riders using variator upgrades, big bore kits, or racing setups.

🔹 Gear ratio options: 13x34T / 14x32T / 15x31T
🔹 Enhanced acceleration and CVT efficiency
🔹 Perfect for tuned or stock JOG 50 engines
🔹 Durable build for long-lasting performance

Video: https://youtu.be/_lPQiepHlmA

Upgrade your JOG 50 with a transmission gear that lets you control how your power feels.