Chain & Sprockets
- 2003–Present Honda CBR600RR — stock tooth count (16T) — 520 conversion
- 2017–Present Honda CBR1000RR — stock tooth count (16T) — 520 conversion
- 2019–Present Honda CBR650R — +1 tooth over stock (15T) — 520 conversion
- 2019–Present Honda CB650R — +1 tooth over stock (15T) — 520 conversion
Additional fitment at the bottom.
Product Overview
This is a Renthal 16-tooth 520-pitch Ultralight front sprocket for a range of Honda sportbikes and nakeds. Every bike in this fitment list runs 525-pitch chain from the factory — this is a 525?520 conversion sprocket across the board. Installing it requires replacing the chain and rear sprocket with 520-compatible components on every model listed.
CBR600RR 2003–Present: The CBR600RR runs a 16-tooth front stock throughout its entire run. This sprocket matches stock tooth count — no gearing change — but requires a full 520 conversion from the stock 525 drivetrain.
CBR1000RR Fireblade 2017–Present: The 2017-and-later CBR1000RR also runs a 16-tooth front stock with 525-pitch chain. Same situation as the CBR600RR — stock tooth count, 520 conversion required.
CBR650R and CB650R 2019–Present: Both the CBR650R and CB650R run a 15-tooth front stock with 525-pitch chain. This sprocket is one tooth over stock, which lengthens gearing — lower RPM at cruise, softer pull from a stop — in addition to requiring a 520 conversion.
Key Technology & Design
Renthal makes this sprocket from nickel-chrome-molybdenum alloy steel, CNC-machined rather than stamped for tighter dimensional tolerances and more consistent tooth geometry. The Ultralight design uses a computer-aided lightening pattern to reduce rotating mass while maintaining structural integrity. Natural finish.
Specs
- Tooth Count: 16
- Chain Pitch: 520
- Position: Countershaft (front)
- Material: Nickel-chrome-molybdenum alloy steel
- Style: Ultralight
- Finish: Natural
- Manufacturer Part Number: 315V-520-16P
Fitment
Year(s) — Make / Model — OEM Gearing — OEM Chain
| 2007–Present | Honda CBR600RR | 16T / 42T | 525 |
| 2003–2006 | Honda CBR600RR | 16T / 43T | 525 |
| 2017–Present | Honda CBR1000RR Fireblade | 16T / 43T | 525 |
| 2019–Present | Honda CBR650R | 15T / 42T | 525 |
| 2019–Present | Honda CB650R | 15T / 42T | 525 |
Additional Fitment
Year(s) — Make / Model — OEM Gearing — OEM Chain
| 2020–2021, 2024 | Honda CRF1100L Africa Twin | ||
| 2019 | Honda CRF1000L Africa Twin ABS | ||
| 2018 | Honda CBR1000S | ||
| 2016–2018 | Honda CRF1000L Africa Twin | ||
| 2011–2013 | Honda CBR600F | ||
| 2007–2013 | Honda CB600F | ||
| 2021 | Honda CMX1100 Rebel 1100 | ||
| 2001–2006 | Honda CBR600F4 | ||
| 1999–2000 | Honda CBR600F F4 | ||
| 1996–1999 | Honda CBR900RR |
Why Convert to 520
Every bike in this fitment list leaves the factory with 525-pitch chain — chosen by Honda for durability and longevity under street use. A 520 conversion replaces the chain and both sprockets with narrower, lighter components.
The real benefit is reduced rotating mass. A lighter chain and sprocket assembly means less weight spinning at the rear wheel with every acceleration and deceleration cycle. This is most noticeable for track riders and aggressive street riders — the bike responds more quickly to throttle inputs and feels lighter overall. For casual street commuters the difference is subtle and may not be physically felt.
The tradeoff is longevity. A 520 chain is working with less material than a 525 and will generally not outlast a stock-pitch setup under the same conditions. Riders who prioritize maximum chain life over rotating mass reduction are better served staying with the stock chain pitch.
The bottom line: 520 conversion is a meaningful upgrade for track use and performance-focused street riding. For everyday commuting and general street miles, the stock chain pitch is the more practical choice.
Gearing — Staying Stock or Making a Change
For CBR600RR and CBR1000RR riders, this sprocket matches the stock front tooth count — no gearing change beyond the 520 conversion itself.
For CBR650R and CB650R riders, this sprocket is one tooth over the stock 15-tooth front. Going one tooth larger on the front lengthens gearing — lower RPM at cruise, softer pull from a stop, slightly higher top speed potential. This suits riders who spend more time on the highway. Riders who prefer sharper acceleration may want to stay with the stock 15T.
Stock gearing on these bikes is well matched for general street use. Neither direction is right or wrong — it depends on how and where you ride.
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IMPORTANT: Please Review Your Owner’s Manual for Exact Amounts or Sizing of This Product!
Speak to one of our experts today:
469-490-3577
Renthal
SKU:1212-1917
Description:Renthal 16-Tooth 520 Ultralight Front Sprocket
Main Fitment:
- 2003–Present Honda CBR600RR — stock tooth count (16T) — 520 conversion
- 2017–Present Honda CBR1000RR — stock tooth count (16T) — 520 conversion
- 2019–Present Honda CBR650R — +1 tooth over stock (15T) — 520 conversion
- 2019–Present Honda CB650R — +1 tooth over stock (15T) — 520 conversion
Additional fitment at the bottom.
Product Overview
This is a Renthal 16-tooth 520-pitch Ultralight front sprocket for a range of Honda sportbikes and nakeds. Every bike in this fitment list runs 525-pitch chain from the factory — this is a 525?520 conversion sprocket across the board. Installing it requires replacing the chain and rear sprocket with 520-compatible components on every model listed.
CBR600RR 2003–Present: The CBR600RR runs a 16-tooth front stock throughout its entire run. This sprocket matches stock tooth count — no gearing change — but requires a full 520 conversion from the stock 525 drivetrain.
CBR1000RR Fireblade 2017–Present: The 2017-and-later CBR1000RR also runs a 16-tooth front stock with 525-pitch chain. Same situation as the CBR600RR — stock tooth count, 520 conversion required.
CBR650R and CB650R 2019–Present: Both the CBR650R and CB650R run a 15-tooth front stock with 525-pitch chain. This sprocket is one tooth over stock, which lengthens gearing — lower RPM at cruise, softer pull from a stop — in addition to requiring a 520 conversion.
Key Technology & Design
Renthal makes this sprocket from nickel-chrome-molybdenum alloy steel, CNC-machined rather than stamped for tighter dimensional tolerances and more consistent tooth geometry. The Ultralight design uses a computer-aided lightening pattern to reduce rotating mass while maintaining structural integrity. Natural finish.
Specs
- Tooth Count: 16
- Chain Pitch: 520
- Position: Countershaft (front)
- Material: Nickel-chrome-molybdenum alloy steel
- Style: Ultralight
- Finish: Natural
- Manufacturer Part Number: 315V-520-16P
Fitment
Year(s) — Make / Model — OEM Gearing — OEM Chain
| 2007–Present | Honda CBR600RR | 16T / 42T | 525 |
| 2003–2006 | Honda CBR600RR | 16T / 43T | 525 |
| 2017–Present | Honda CBR1000RR Fireblade | 16T / 43T | 525 |
| 2019–Present | Honda CBR650R | 15T / 42T | 525 |
| 2019–Present | Honda CB650R | 15T / 42T | 525 |
Additional Fitment
Year(s) — Make / Model — OEM Gearing — OEM Chain
| 2020–2021, 2024 | Honda CRF1100L Africa Twin | ||
| 2019 | Honda CRF1000L Africa Twin ABS | ||
| 2018 | Honda CBR1000S | ||
| 2016–2018 | Honda CRF1000L Africa Twin | ||
| 2011–2013 | Honda CBR600F | ||
| 2007–2013 | Honda CB600F | ||
| 2021 | Honda CMX1100 Rebel 1100 | ||
| 2001–2006 | Honda CBR600F4 | ||
| 1999–2000 | Honda CBR600F F4 | ||
| 1996–1999 | Honda CBR900RR |
Why Convert to 520
Every bike in this fitment list leaves the factory with 525-pitch chain — chosen by Honda for durability and longevity under street use. A 520 conversion replaces the chain and both sprockets with narrower, lighter components.
The real benefit is reduced rotating mass. A lighter chain and sprocket assembly means less weight spinning at the rear wheel with every acceleration and deceleration cycle. This is most noticeable for track riders and aggressive street riders — the bike responds more quickly to throttle inputs and feels lighter overall. For casual street commuters the difference is subtle and may not be physically felt.
The tradeoff is longevity. A 520 chain is working with less material than a 525 and will generally not outlast a stock-pitch setup under the same conditions. Riders who prioritize maximum chain life over rotating mass reduction are better served staying with the stock chain pitch.
The bottom line: 520 conversion is a meaningful upgrade for track use and performance-focused street riding. For everyday commuting and general street miles, the stock chain pitch is the more practical choice.
Gearing — Staying Stock or Making a Change
For CBR600RR and CBR1000RR riders, this sprocket matches the stock front tooth count — no gearing change beyond the 520 conversion itself.
For CBR650R and CB650R riders, this sprocket is one tooth over the stock 15-tooth front. Going one tooth larger on the front lengthens gearing — lower RPM at cruise, softer pull from a stop, slightly higher top speed potential. This suits riders who spend more time on the highway. Riders who prefer sharper acceleration may want to stay with the stock 15T.
Stock gearing on these bikes is well matched for general street use. Neither direction is right or wrong — it depends on how and where you ride.
