Textured inner face & vented design—steady engagement, OEM-fit geometry.

The CYGNUS Clutch Bell is built to Ø131.5 mm OD / Ø120 mm ID for Yamaha CYGNUS applications. A micro-textured (sandblasted) inner working face helps the shoes bite cleanly, while vent/ejection holes promote dust purge and airflow to keep engagement consistent through heat cycles. At 690 g, the bell supports smooth takeoff when paired with appropriate springs and variator tuning.

🔹 OEM-Fit Dimensions — Ø131.5 mm OD / Ø120 mm ID for stock-layout compatibility
🔹 Textured Inner Face — Sandblasted surface aids clean bite, reduces slip/chatter, resists glazing
🔹 Vented / Ejection Holes — Promote dust evacuation and cooling for steadier feel over repeated stops
🔹 690 g Bell Mass — Provides inertia for smoother drive-off with matched springs/rollers
🔹 Precision Roundness — Concentric running surfaces for consistent shoe contact

Product Specifications
✔ Outer / Inner Diameter: Ø131.5 mm / Ø120 mm
✔ Weight: 690 g
✔ Fitment: YAMAHA CYGNUS models (year/market dependent)
✔ Focus: Clean bite, temperature stability, straightforward install
✔ Package Includes: Clutch bell (1 pc)

Installation Notes
• Deglaze shoes and bell; avoid oil/grease contamination on the working face.
• Torque the retaining nut per the service manual; confirm spacer/washer orientation if equipped.
• Bed in with several moderate launches; fine-tune contra/clutch springs and roller weights as needed.

Power You Can Trust.

Lightweight airflow shell for cleaner bite and steadier stops.

This 2D Clutch Bell for RS 100 pairs a matte-coated inner face with airflow-oriented cutouts to help engagement stay predictable through repeated starts. Front openings move heat away, while side dust ports help eject debris to reduce glazing. OEM-fit geometry keeps installation straightforward.

Highlights
🔹 Matte-Coated Inner Face — Coating supports clean, repeatable clutch bite.
🔹 Airflow Front Cutouts — Assist CVT compartment cooling under stop-and-go use.
🔹 Side Dust Ports — Help eject wear dust and reduce glazing/slip.
🔹 410 g Lightweight Shell — Balanced response for daily and light-tuned setups.
🔹 OEM-Fit Interfaces — Drop-in alignment with stock hardware.

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

Installation Notes

• Verify shoe size and cover clearance; confirm OD/ID compatibility.

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

• Keep the inner surface clean and dry; do not lubricate contact areas.

• Gentle run-in, then recheck for noise, vibration, or uneven contact.

Power You Can Trust.

Reinforced Outer Ring. Sandblasted Inner Surface. Vent-Cut Cooling Efficiency.

This RS100 3D Clutch Bell features a reinforced outer safety ring, distinguishing it from standard 2D clutch bells and improving structural strength at high RPM. The sandblasted inner surface increases friction for quicker clutch engagement, while the front vent-cut openings help reduce heat buildup and maintain consistent performance during repeated acceleration.

Designed for RS100 riders seeking a stable, responsive, and durable CVT upgrade for daily riding and light performance tuning.

🔹 Highlights

• Reinforced Outer Ring (3D Design) — Stronger structure vs. 2D clutch bell

• Sandblasted Inner Surface — Improved bite and stable engagement

• Vent-Cut Openings — Enhanced cooling airflow and dust release

• Lightweight 455 g — Reduced rotational load, smoother response

• OEM-Compatible Fitment — Direct installation for RS100 CVT systems

✔ Product Specifications

• Type: 3D Clutch Bell

• Outer Diameter: 122 mm

• Inner Diameter: 112 mm

• Weight: 455 g

• Fitment: RS100

• Focus: Structural strength & cooling efficiency

• Package Includes: Clutch Bell ×1

🔧 Installation Notes

• Ensure clutch shoe condition before installation

• Confirm proper clearance between clutch bell and clutch housing

• Recommended to inspect springs for optimal response

• Allow a short break-in period for sandblasted surface engagement

Power You Can Trust.

Enhanced Bite. QPQ Surface Strength. Lightweight Daily Performance.

This QPQ Light Weight Clutch Bell for RS100 features a unique internal groove-pattern design, replacing traditional sandblasted coatings to provide stronger clutch shoe engagement under acceleration. The hardened QPQ (Quench–Polish–Quench) surface treatment enhances wear resistance while maintaining stable thermal performance.
Designed without ventilation cutouts, the structure improves rigidity and delivers consistent power transfer for daily riding and mild performance tuning.

🔹 Highlights

• Internal Groove Pattern — Enhances bite and clutch shoe engagement

• QPQ Surface Treatment — Superior wear resistance and smooth rotation

• Lightweight Structure (520 g) — Improves response and reduces rotational load

• No Vent Cutouts — Increased shell rigidity and stable performance

• OEM-Compatible Fitment — Designed specifically for RS100 clutch systems

✔ Product Specifications

• Type: QPQ Light Weight Clutch Bell

• Outer Diameter: 123.5 mm

• Inner Diameter: 112 mm

• Weight: 520 g

• Fitment: RS100

• Focus: Enhanced bite strength & rotational efficiency

• Package Includes: Clutch Bell ×1

🔧 Installation Notes

• Ensure proper clutch shoe surface condition before installation

• Check clearance between clutch bell and housing

• Recommended to inspect clutch springs for best performance

• Break-in period required for optimal groove engagement

Power You Can Trust.

Reinforced Safety Ring. Sandblasted Inner Surface. Vent-Cut Cooling Flow.

This Clutch Bell for AEROX features a reinforced outer safety ring, providing additional structural strength during high-RPM operation. The sandblasted inner surface increases clutch shoe bite for faster engagement, while the vent-cut openings enhance airflow, reduce heat buildup, and improve overall clutch consistency.

With its large 137 mm outer diameter and durable 715 g structure, it delivers stable power transfer and reliable CVT performance for daily riding and light performance upgrades.

🔹 Highlights

• Reinforced Outer Ring — Stronger structure for high-RPM durability

• Sandblasted Inner Surface — Improved clutch bite and stable engagement

• Vent-Cut Openings — Enhanced cooling and dust release

• Large OD 137 mm — Broad contact area for stronger stability

• OEM-Compatible Fitment — Designed specifically for AEROX CVT systems

✔ Product Specifications

• Type: Clutch Bell

• Outer Diameter: 137 mm

• Inner Diameter: 125 mm

• Weight: 715 g

• Fitment: AEROX

• Focus: Strength, cooling efficiency & engagement stability

• Package Includes: Clutch Bell ×1

🔧 Installation Notes

• Check clutch shoe condition before installation

• Ensure proper clearance with clutch housing

• Inspect springs to optimize engagement response

• Sandblasted surface requires a short break-in period

Power You Can Trust.

Reinforced Safety Ring. Sandblasted Inner Surface. Vent-Cut Cooling Flow.

This Clutch Bell for N-MAX features a reinforced outer safety ring, providing additional structural strength during high-RPM operation. The sandblasted inner surface increases clutch shoe bite for faster engagement, while the vent-cut openings enhance airflow, reduce heat buildup, and improve clutch consistency.

With its large 137 mm outer diameter and durable 715 g structure, it delivers stable power transfer and reliable CVT performance for daily riding and light performance upgrades.

🔹 Highlights

• Reinforced Outer Ring — Stronger structure for high-RPM durability

• Sandblasted Inner Surface — Improved clutch bite and stable engagement

• Vent-Cut Openings — Enhanced cooling and dust release

• Large OD 137 mm — Broad contact area for stronger stability

• OEM-Compatible Fitment — Designed specifically for N-MAX CVT systems

✔ Product Specifications

• Type: Clutch Bell

• Outer Diameter: 137 mm

• Inner Diameter: 125 mm

• Weight: 715 g

• Fitment: N-MAX

• Focus: Strength, cooling efficiency & engagement stability

• Package Includes: Clutch Bell ×1

🔧 Installation Notes

• Check clutch shoe condition before installation

• Ensure proper clearance with clutch housing

• Inspect springs to optimize engagement response

• Sandblasted surface requires a short break-in period

Power You Can Trust.