CYGNUS Transmission Parts

Matched 117.5/119.5 mm faces—crisp takeoff, steady belt tracking.

The CYGNUS Variator Pulley Set is engineered for YAMAHA CYGNUS (Gen 1–5). It includes a Ø117.5 mm variator pulley (21 mm bore), a Ø119.5 mm pulley fan, ramp plate, and washer. Parts are precision-machined for flatness and balance to support quick drive engagement and reliable belt contact. Total kit weight: 575 g.

🔹 117.5 mm Pulley / 21 mm Bore — Stable belt path and contact surface
🔹 119.5 mm Pulley Fan — Pairs with shrouds to guide airflow over the drive face
🔹 Ramp Plate Profile — OEM-fit geometry for accurate assembly
🔹 Balanced Components — Reduced vibration for consistent operation
🔹 Stronger Drive-Off — Supports firmer takeoff with matched roller weights and a healthy belt

Product Specifications
✔ Pulley OD / ID: Ø117.5 mm / Ø21 mm
✔ Pulley Fan OD: Ø119.5 mm
✔ Total Weight (Kit): 575 g
✔ Fitment: YAMAHA CYGNUS (Gen 1–5) scooters (year/market dependent)
✔ Focus: Quick engagement, steady belt tracking, straightforward install
✔ Package Includes: Pulley, pulley fan, ramp plate, washer

Installation Notes
• Verify roller/slider weights and drive belt condition (not included).
• Follow OEM torque and lubrication practices for the variator nut; confirm washer orientation.
• Check fan–shroud clearance after assembly and observe belt tracking on first run.

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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.

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Snappier bite with less rotating mass.

This Light Weight Clutch is designed for Yamaha CYGNUS Gen 1–5. Its lighter assembly targets quicker spin-up and cleaner engagement, supporting responsive launches and consistent take-offs for city riding or tuned CVT setups. Machined interfaces align with OEM geometry for straightforward installation.

Highlights
🔹 Quick Engagement Feel — Lightweight build aims for faster RPM pick-up after proper tuning.
🔹 Consistent Bite — Refined contact geometry helps smooth, predictable take-offs.
🔹 OEM-Compatible Fit — Interfaces follow stock dimensions for an easy drop-in.
🔹 Tuning Friendly — Works with common clutch springs; pair with your variator/rollers to target RPM.
🔹 Everyday to Performance — Suitable for commuting and sport-minded setups.

Product Specifications
✔ Outer Diameter: 115.5 mm
✔ Weight: 965 g
✔ Type: Automatic centrifugal clutch
✔ Fitment: Yamaha CYGNUS (Gen 1–5)
✔ Focus: Responsive engagement / city & sport
✔ Package Includes: Light Weight Clutch (1 pc)

Installation Notes

• Confirm bell inner diameter and cover clearance before installation.

• Start with your current clutch springs; adjust rate/preload as needed to set engagement RPM.

• Inspect belt and variator rollers; overall CVT condition affects results.

• Perform gentle run-in, then recheck for noises, vibration, or uneven contact.

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Stable backshift, smoother drive, cooler belt temps.

This Sliding Sheave Set (movable + fixed sheave) for Yamaha CYGNUS Gen 1–5 refines the CVT’s shift curve and backshift response. Helical cam tracks guide the sheave movement for predictable ratio changes, while a clean contact surface supports belt grip and heat control. Built to match OEM interfaces for straightforward installation and consistent alignment.

Highlights
🔹 Predictable Shift Curve — Helical cam profile supports smooth upshift and timely backshift.
🔹 Stable Belt Tracking — Face geometry helps reduce slip and glazing under repeated stops/starts.
🔹 Concentric, True Running — Machined hubs and bores promote straight, low-friction travel.
🔹 Cooling Support — Broad face area and finish aid heat dissipation to protect belt life.
🔹 Tuning Friendly — Works with common contra springs and belts to target RPM and engine load.

Product Specifications
✔ Outer Diameter: 138 mm
✔ Weight: 1070 g
✔ Type: Sliding Sheave Set (movable + fixed)
✔ Fitment: Yamaha CYGNUS (Gen 1–5)
✔ Focus: Shift smoothness / backshift stability / belt life
✔ Package Includes: Sliding Sheave Set

Installation Notes

• Verify compatibility with your clutch, belt width, and cover clearance before installation.

• Keep sheave faces clean and dry; do not grease belt contact surfaces.

• Set contra spring rate to match target engagement and backshift; recheck roller/weight tuning.

• After assembly, rotate by hand to confirm free travel; road-test and inspect for abnormal wear.

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Reliable daily tuning for clean launches and smooth cruising.

These Roller Weights are sized for Yamaha CYGNUS Gen 1–5 variators using 20×12L. With consistent mass tolerance and a smooth running surface, they make it easy to fine-tune RPM for city riding, hill starts, or light performance setups at a solid everyday value.

Highlights
🔹 Everyday Consistency — Balanced mass across the set supports a steady, repeatable shift curve.
🔹 Smooth Ramp Travel — Clean finish helps reduce ramp drag for predictable belt climb.
🔹 Practical Durability — Built for daily commuting and regular stop-and-go use.
🔹 Wide Tuning Range — 6–15 g options let you target the RPM band you prefer.
🔹 Direct OEM Fit — Drop-in size for 20×12L CYGNUS applications.

Product Specifications
✔ Size: 20×12L (Ø20 × 12 mm)
✔ Weight Options: 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 / 14 / 15 g（select one weight per set）
✔ Quantity: 6 pcs / set
✔ Fitment: Yamaha CYGNUS (Gen 1–5) with 20×12L variators
✔ Focus: Daily RPM tuning / launch response / cruise stability
✔ Package Includes: Roller Weights (6 pcs)

Installation Notes

• Start from stock weight; adjust in ±0.5–1.0 g steps to reach target RPM.

• For testing, you may alternate two weights; final setup should use one uniform weight.

• Keep ramps and sleeve clean and dry; do not grease rollers or ramp faces.

• Inspect belt width/condition; worn belts affect the shift curve.

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Tighter tolerances. Smoother shifts. Longer-lasting feel.

These A+ Roller Weights are built for riders who want steadier RPM and shift consistency on Yamaha CYGNUS Gen 1–5 variators using 20×12L. An enhanced wear-resistant compound, a low-friction running surface, and precision-matched mass across the set help the belt climb cleanly and resist flat-spotting under heat and stop-and-go riding.

Highlights
🔹 Precision-Matched Mass — Consistent weight across the set supports a predictable CVT curve.
🔹 Low-Friction Running Surface — Reduces ramp drag for cleaner belt climb and quieter operation.
🔹 Wear & Flat-Spot Resistance — Holds shape better under repeated launches and heat cycles.
🔹 Thermal Stability — Maintains smooth response during extended city traffic or hill climbs.
🔹 A+ vs Standard — Choose A+ for steadier RPM and durability under load; choose Standard for basic daily commuting needs.

Product Specifications
✔ Size: 20×12L (Ø20 × 12 mm)
✔ Weight Options: 6 g / 7 g / 8 g / 9 g / 10 g / 11 g / 12 g / 13 g / 14 g / 15 g（select one weight per set）
✔ Quantity: 6 pcs / set
✔ Fitment: Yamaha CYGNUS (Gen 1–5) with 20×12L variators
✔ Focus: RPM tuning / shift consistency / durability
✔ Package Includes: Roller Weights (6 pcs)

Installation Notes

• Start from your stock weight; adjust in ±0.5–1.0 g steps to hit target RPM.

• For testing you may alternate two weights; final setup should use one uniform weight.

• Keep ramps and sleeve clean and dry; do not grease rollers or ramp faces.

• Inspect belt width/condition; recheck after the first 50–100 km for dust patterns or noise.

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Match engagement RPM to your ride.

These Clutch Springs let you fine-tune clutch engagement on Yamaha CYGNUS Gen 1–5. Choose from four color-coded rates to set 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 options cover daily to sport setups.
🔹 Color-Coded Clarity — Blue / Orange / Yellow / Red for quick identification in the shop.
🔹 Consistent Response — Matched spring rates support predictable take-off behavior.
🔹 Tuning Friendly — Pair with roller weights and contra spring to target your RPM band.
🔹 Direct OEM Fit — Designed for CYGNUS 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 CYGNUS (Gen 1–5)
✔ Focus: Engagement RPM control / launch feel
✔ Package Includes: Clutch Springs ×3

Installation Notes

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

• Actual engagement RPM varies with rollers, belt, clutch shoes, bell, and tach reading.

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

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

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