Chain & Sprockets
- 2007–present Honda CBR600RR — stock tooth count (42T) — 520 conversion
- 2017–2019, 2021–present Honda CBR1000RR Fireblade — -1 tooth under stock (43T) — 520 conversion
- 2020–present Honda CBR1000RR-R Fireblade SP — -1 tooth under stock (43T) — 520 conversion
Additional fitment at the bottom.
Product Overview
This is a Driven Racing 42-tooth 520-pitch lightweight steel rear sprocket for Honda CBR sportbikes. Every bike in this fitment list runs 525-pitch chain from the factory — this is a 520 conversion sprocket across the board. Installing it requires replacing the chain and front sprocket with 520-compatible components on every model listed.
CBR600RR 2007–present: The 2007-and-later CBR600RR runs a 42-tooth rear stock with 525-pitch chain. This sprocket matches the stock tooth count — no gearing change — but requires a full 520 conversion.
CBR1000RR 2017–2019 and 2021–present, and CBR1000RR-R Fireblade SP 2020–present: These bikes run a 43-tooth rear stock with 525-pitch chain. This sprocket is one tooth under stock, which lengthens gearing slightly, in addition to requiring a 520 conversion.
Key Technology & Design
Driven Racing builds this sprocket from steel using their EST technology, which allows material to be removed from the sprocket body to reduce weight while maintaining structural integrity at the tooth ring. A black zinc semi-gloss finish is applied for corrosion resistance. The result is one of the lighter steel rear sprockets available in 520 pitch for these Honda models.
Why Convert to 520
Every Honda CBR in this fitment list leaves the factory with 525-pitch chain — a heavier pitch 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 of 520 conversion 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.
Specs
- Tooth Count: 42
- Chain Pitch: 520
- Position: Rear (drive)
- Material: Steel
- Finish: Zinc / black semi-gloss
- Manufacturer Part Number: 5032-520-42T
Fitment
Year(s) — Make / Model — OEM Gearing — OEM Chain
| 2007–present | Honda CBR600RR | 16T / 42T | 525 |
| 2017–2019, 2021–present | Honda CBR1000RR Fireblade | 16T / 43T | 525 |
| 2020–present | Honda CBR1000RR-R Fireblade SP | 16T / 43T | 525 |
Additional Fitment
Year(s) — Make / Model — OEM Gearing — OEM Chain
| 2008–2016 | Honda CBR1000RR Fireblade | ||
| 2004–2007 | Honda CBR1000RR Fireblade | ||
| 2003–2006 | Honda CBR600RR | ||
| 2001–2006 | Honda CBR600F F4i | ||
| 2000–2006 | Honda RVT1000R RC51 | ||
| 2000–2003 | Honda CBR954RR | ||
| 2000–2003 | Honda CBR929RR |
Gearing — Staying Stock or Making a Change
For CBR600RR 2007–present riders, this sprocket matches the stock rear tooth count — no gearing change beyond the 520 conversion itself.
For CBR1000RR 2017–2019 and 2021–present, and CBR1000RR-R Fireblade SP riders, this sprocket is one tooth under the stock 43-tooth rear. Going one tooth smaller on the rear lengthens gearing slightly — lower RPM at cruise, softer pull from a stop. The effect is modest at a single tooth difference.
If you are considering further gearing changes, here is the general framework. Going larger on the rear — more teeth — shortens gearing: quicker acceleration, higher RPM at speed, reduced top speed. Going smaller on the rear — fewer teeth — lengthens gearing: lower cruise RPM, softer acceleration. A one-tooth change on the rear is a smaller adjustment than a one-tooth change on the front — a front sprocket change of one tooth is roughly equivalent to two to three teeth on the rear.
Stock gearing on these bikes is well matched for general street use. Changes in either direction are a trade-off, not an improvement — 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
Driven Racing
SKU:1210-0943
Description:Driven Racing 42-Tooth 520 Lightweight Steel Rear Sprocket — Honda CBR600RR / CBR1000RR / CBR1000RR-R
Main Fitment:
- 2007–present Honda CBR600RR — stock tooth count (42T) — 520 conversion
- 2017–2019, 2021–present Honda CBR1000RR Fireblade — -1 tooth under stock (43T) — 520 conversion
- 2020–present Honda CBR1000RR-R Fireblade SP — -1 tooth under stock (43T) — 520 conversion
Additional fitment at the bottom.
Product Overview
This is a Driven Racing 42-tooth 520-pitch lightweight steel rear sprocket for Honda CBR sportbikes. Every bike in this fitment list runs 525-pitch chain from the factory — this is a 520 conversion sprocket across the board. Installing it requires replacing the chain and front sprocket with 520-compatible components on every model listed.
CBR600RR 2007–present: The 2007-and-later CBR600RR runs a 42-tooth rear stock with 525-pitch chain. This sprocket matches the stock tooth count — no gearing change — but requires a full 520 conversion.
CBR1000RR 2017–2019 and 2021–present, and CBR1000RR-R Fireblade SP 2020–present: These bikes run a 43-tooth rear stock with 525-pitch chain. This sprocket is one tooth under stock, which lengthens gearing slightly, in addition to requiring a 520 conversion.
Key Technology & Design
Driven Racing builds this sprocket from steel using their EST technology, which allows material to be removed from the sprocket body to reduce weight while maintaining structural integrity at the tooth ring. A black zinc semi-gloss finish is applied for corrosion resistance. The result is one of the lighter steel rear sprockets available in 520 pitch for these Honda models.
Why Convert to 520
Every Honda CBR in this fitment list leaves the factory with 525-pitch chain — a heavier pitch 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 of 520 conversion 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.
Specs
- Tooth Count: 42
- Chain Pitch: 520
- Position: Rear (drive)
- Material: Steel
- Finish: Zinc / black semi-gloss
- Manufacturer Part Number: 5032-520-42T
Fitment
Year(s) — Make / Model — OEM Gearing — OEM Chain
| 2007–present | Honda CBR600RR | 16T / 42T | 525 |
| 2017–2019, 2021–present | Honda CBR1000RR Fireblade | 16T / 43T | 525 |
| 2020–present | Honda CBR1000RR-R Fireblade SP | 16T / 43T | 525 |
Additional Fitment
Year(s) — Make / Model — OEM Gearing — OEM Chain
| 2008–2016 | Honda CBR1000RR Fireblade | ||
| 2004–2007 | Honda CBR1000RR Fireblade | ||
| 2003–2006 | Honda CBR600RR | ||
| 2001–2006 | Honda CBR600F F4i | ||
| 2000–2006 | Honda RVT1000R RC51 | ||
| 2000–2003 | Honda CBR954RR | ||
| 2000–2003 | Honda CBR929RR |
Gearing — Staying Stock or Making a Change
For CBR600RR 2007–present riders, this sprocket matches the stock rear tooth count — no gearing change beyond the 520 conversion itself.
For CBR1000RR 2017–2019 and 2021–present, and CBR1000RR-R Fireblade SP riders, this sprocket is one tooth under the stock 43-tooth rear. Going one tooth smaller on the rear lengthens gearing slightly — lower RPM at cruise, softer pull from a stop. The effect is modest at a single tooth difference.
If you are considering further gearing changes, here is the general framework. Going larger on the rear — more teeth — shortens gearing: quicker acceleration, higher RPM at speed, reduced top speed. Going smaller on the rear — fewer teeth — lengthens gearing: lower cruise RPM, softer acceleration. A one-tooth change on the rear is a smaller adjustment than a one-tooth change on the front — a front sprocket change of one tooth is roughly equivalent to two to three teeth on the rear.
Stock gearing on these bikes is well matched for general street use. Changes in either direction are a trade-off, not an improvement — it depends on how and where you ride.
