Chain & Sprockets
- Includes 520 front sprocket, rear sprocket, and chain
- Converts from stock 525 to 520 system
- Reduces rotating mass compared to OEM drivetrain
- Designed as a complete matched performance package
Chain & Sprocket Compatibility
Chain and sprocket sizes must always match.
- 520 chain must be used with 520 sprockets
- 525 chain must be used with 525 sprockets
- Mixing sizes will cause improper fitment and premature wear
- This kit replaces everything to ensure proper compatibility
Vortex SX3 X-Ring Sealed Chain
Built for aggressive street use with the durability of a sealed design.
- 520 SX3 X-ring sealed chain construction
- Black finish
- Rivet-style master link included
- Rated at 37.8 kN / 8,500 lb tensile strength
Steel Sprocket Construction
Built for durability while still supporting a more aggressive acceleration setup.
- Steel front sprocket for strength and reliability
- Steel rear sprocket for extended wear life
- More durable than aluminum for real street use
- Designed to handle aggressive riding conditions
Gearing & Performance
Quick Acceleration Setup
This kit significantly changes the final drive ratio to improve acceleration and responsiveness.
- Designed around a 15T front / 43T rear setup
- Shorter gearing than stock for stronger acceleration
- Faster throttle response and improved roll-on power
- Helps the engine get into the power quicker
- Stronger drive out of corners and lower-speed situations
Stock vs This Kit
- Stock Yamaha YZF-R1 / R1M / R1S: 16T front / 41T rear — 525 chain
- This kit: 15T front / 43T rear — 520 chain
- Going down 1 tooth in the front is already a noticeable gearing change on its own
- Adding 2 teeth in the rear makes the change even more aggressive
- The bike will pull harder through the gears and get into the power sooner
- Acceleration will feel much stronger than stock
- Cruising RPM will be a bit higher compared to the stock setup
Real-World Feel
- Noticeably quicker throttle response
- Stronger pull in lower and mid-range acceleration
- More immediate drive when getting back on the throttle
- More aggressive overall feel than stock
- Better suited for riders who want acceleration over maximum top-end bias
Why Switch to 520 Over the Stock 525?
Performance vs Durability Tradeoff
Yamaha uses a 525 chain from the factory for durability and long service intervals. A 520 conversion is a common performance-focused upgrade.
- 520 chain is narrower and lighter than 525
- Reduces rotating mass in the drivetrain
- Allows the engine to rev more freely
- Improves throttle response and riding feel
- Common upgrade for sport and track-oriented riders
What Actually Makes the Difference
- You are not gaining horsepower from chain size alone
- The biggest performance gain here comes from the gearing change
- The 520 setup enhances responsiveness and feel
- The 15/43 gearing is what really makes this kit feel more aggressive than stock
- 525 remains better for maximum longevity and heavier-duty use
Why These Kits Are Popular
- Riders often replace chain and sprockets together
- Combines gearing change plus chain conversion in one package
- Performance riders prefer lighter drivetrain setups
- Simple, complete upgrade over worn stock components
Ideal Use
Best For Riders Who Want More Response
- Street riding
- Aggressive sport riding
- Backroad riding
- Track day use
- Riders upgrading from stock drivetrain feel
Fitment
- 2015–Current — Yamaha YZF-R1
- 2015–Current — Yamaha YZF-R1M
- 2016–2018 — Yamaha YZF-R1S
Specs
- Brand: Vortex
- Product Name: Chain and Sprocket Kit
- Chain Type: 520 SX3
- Chain Size: 520
- Seal Type: X-Ring
- Master Link Connector Type: Rivet
- Tensile Strength: 37.8 kN / 8,500 lb
- Front Sprocket Tooth Count: 15
- Rear Sprocket Tooth Count: 43
- Material: Steel Rear Sprocket
- Color / Finish: Black Sprocket / Natural Silver Chain w/ Black Outer Links
- Riding Style: Street
- Units: Kit
IMPORTANT: Please Review Your Owner’s Manual for Exact Amounts or Sizing of This Product!
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Quantity:
Earn $17.15 in UBD Bucks
Fitment:
IMPORTANT: Please Review Your Owner’s Manual for Exact Amounts or Sizing of This Product!
We ship nationwide!
Questions?
Speak to one of our experts today:
469-490-3577
Speak to one of our experts today:
469-490-3577
Brand:
Vortex
SKU:1230-1205
Description:Ships in 1-2 Days (Inner 48 states Only)
Vortex 520 Steel Chain & Sprocket Kit w/Black Chain Yamaha YZF-R1 / R1M / R1S
Product Overview
The Vortex HFRS 520 Chain and Sprocket Kit is designed for riders looking to make the Yamaha R1 platform feel quicker, sharper, and more responsive under throttle.
This is a full 520 conversion kit, replacing the stock 525 chain and sprockets with a complete 520 setup. Combined with a more aggressive gearing change, this kit gives the bike a noticeably stronger acceleration feel, quicker revving response, and a more immediate connection to the rear wheel while still keeping the durability of a steel rear sprocket.
Key Technology & Design
520 Conversion System (Complete Replacement)
This kit replaces the entire OEM drivetrain with a matched 520 setup.
- Includes 520 front sprocket, rear sprocket, and chain
- Converts from stock 525 to 520 system
- Reduces rotating mass compared to OEM drivetrain
- Designed as a complete matched performance package
Chain & Sprocket Compatibility
Chain and sprocket sizes must always match.
- 520 chain must be used with 520 sprockets
- 525 chain must be used with 525 sprockets
- Mixing sizes will cause improper fitment and premature wear
- This kit replaces everything to ensure proper compatibility
Vortex SX3 X-Ring Sealed Chain
Built for aggressive street use with the durability of a sealed design.
- 520 SX3 X-ring sealed chain construction
- Black finish
- Rivet-style master link included
- Rated at 37.8 kN / 8,500 lb tensile strength
Steel Sprocket Construction
Built for durability while still supporting a more aggressive acceleration setup.
- Steel front sprocket for strength and reliability
- Steel rear sprocket for extended wear life
- More durable than aluminum for real street use
- Designed to handle aggressive riding conditions
Gearing & Performance
Quick Acceleration Setup
This kit significantly changes the final drive ratio to improve acceleration and responsiveness.
- Designed around a 15T front / 43T rear setup
- Shorter gearing than stock for stronger acceleration
- Faster throttle response and improved roll-on power
- Helps the engine get into the power quicker
- Stronger drive out of corners and lower-speed situations
Stock vs This Kit
- Stock Yamaha YZF-R1 / R1M / R1S: 16T front / 41T rear — 525 chain
- This kit: 15T front / 43T rear — 520 chain
- Going down 1 tooth in the front is already a noticeable gearing change on its own
- Adding 2 teeth in the rear makes the change even more aggressive
- The bike will pull harder through the gears and get into the power sooner
- Acceleration will feel much stronger than stock
- Cruising RPM will be a bit higher compared to the stock setup
Real-World Feel
- Noticeably quicker throttle response
- Stronger pull in lower and mid-range acceleration
- More immediate drive when getting back on the throttle
- More aggressive overall feel than stock
- Better suited for riders who want acceleration over maximum top-end bias
Why Switch to 520 Over the Stock 525?
Performance vs Durability Tradeoff
Yamaha uses a 525 chain from the factory for durability and long service intervals. A 520 conversion is a common performance-focused upgrade.
- 520 chain is narrower and lighter than 525
- Reduces rotating mass in the drivetrain
- Allows the engine to rev more freely
- Improves throttle response and riding feel
- Common upgrade for sport and track-oriented riders
What Actually Makes the Difference
- You are not gaining horsepower from chain size alone
- The biggest performance gain here comes from the gearing change
- The 520 setup enhances responsiveness and feel
- The 15/43 gearing is what really makes this kit feel more aggressive than stock
- 525 remains better for maximum longevity and heavier-duty use
Why These Kits Are Popular
- Riders often replace chain and sprockets together
- Combines gearing change plus chain conversion in one package
- Performance riders prefer lighter drivetrain setups
- Simple, complete upgrade over worn stock components
Ideal Use
Best For Riders Who Want More Response
- Street riding
- Aggressive sport riding
- Backroad riding
- Track day use
- Riders upgrading from stock drivetrain feel
Fitment
- 2015–Current — Yamaha YZF-R1
- 2015–Current — Yamaha YZF-R1M
- 2016–2018 — Yamaha YZF-R1S
Specs
- Brand: Vortex
- Product Name: Chain and Sprocket Kit
- Chain Type: 520 SX3
- Chain Size: 520
- Seal Type: X-Ring
- Master Link Connector Type: Rivet
- Tensile Strength: 37.8 kN / 8,500 lb
- Front Sprocket Tooth Count: 15
- Rear Sprocket Tooth Count: 43
- Material: Steel Rear Sprocket
- Color / Finish: Black Sprocket / Natural Silver Chain w/ Black Outer Links
- Riding Style: Street
- Units: Kit
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