Chain & Sprockets
- Kawasaki Ninja 650 (EX650) 2006–2026 — stock gearing (15T / 46T)
- Kawasaki Z650 2017–2026 — stock gearing (15T / 46T)
Product Overview
This is a stock replacement chain and sprocket kit for the Kawasaki Ninja 650 and Z650. It matches factory gearing exactly — 15-tooth front, 46-tooth rear — and uses the same 520 chain pitch as stock, so no conversion is required. You are replacing worn components with a matched set at OEM spec.
The kit includes a Driven C45 steel case-hardened front sprocket, a Driven C45 steel alloy black case-hardened rear sprocket, and an RK 520 XRE sealed chain with a rivet-style master link. All three components are packaged together and sized for a direct bolt-on installation.
This kit carries RK's 20,000-mile warranty.
Key Technology & Design
Steel Sprocket Construction
Both sprockets use Driven C45 steel with case hardening. The front sprocket is case-hardened and quenched. The rear is a steel alloy with a black finish. Steel is the right choice for a street-use OEM replacement — it outlasts aluminum under everyday riding conditions and holds up well under the mixed use the Ninja 650 and Z650 typically see.
RK 520 XRE Sealed Chain
The XRE is RK's sealed chain in the 520 pitch. It uses an X-ring seal design to retain lubrication and reduce friction and wear at the chain joints. Tensile strength is rated at 8,200 lb / 36.5 kN. The chain comes pre-cut to length and includes a rivet-style master link. Finish is natural.
Matched Kit
Chain and sprocket pitch must always match — a 520 chain requires 520 sprockets. This kit is built as a matched set, so pitch compatibility is handled. Mixing chain and sprocket sizes from different pitches causes poor fitment and accelerated wear.
Specs
- Brand: RK / Driven
- Chain Type: 520 XRE
- Chain Size: 520
- Seal Type: X-Ring
- Master Link Connector Type: Rivet
- Tensile Strength: 8,200 lb / 36.5 kN
- Front Sprocket Tooth Count: 15
- Rear Sprocket Tooth Count: 46
- Front Sprocket Material: Steel (C45, case-hardened)
- Rear Sprocket Material: Steel alloy (C45, black case-hardened)
- Chain Finish: Natural
- Riding Style: Street
Fitment
Year(s) — Make / Model — Stock Gearing — Stock Chain
| 2006–2026 | Kawasaki Ninja 650 (EX650) | 15T / 46T | 520 |
| 2017–2026 | Kawasaki Z650 | 15T / 46T | 520 |
| 2009–2016 | Kawasaki ER-6N | 15T / 46T | 520 |
Gearing — Staying Stock or Making a Change
This kit matches the stock 15-tooth front and 46-tooth rear on the Ninja 650 and Z650. Installing it keeps your bike at factory stock gearing.
If you are considering a gearing change, here is the general framework. Going one tooth smaller on the front shortens gearing — quicker acceleration, higher RPM at highway speeds, reduced top speed. The effect is roughly equivalent to adding two to three teeth to the rear sprocket. Going one tooth larger lengthens gearing — lower cruise RPM, softer pull from a stop.
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
RK-Excel
SKU:1230-1585
Description:RK OEM Replacement Chain and Sprocket Kit — Kawasaki Ninja 650 / Z650
Main Fitment:
- Kawasaki Ninja 650 (EX650) 2006–2026 — stock gearing (15T / 46T)
- Kawasaki Z650 2017–2026 — stock gearing (15T / 46T)
Product Overview
This is a stock replacement chain and sprocket kit for the Kawasaki Ninja 650 and Z650. It matches factory gearing exactly — 15-tooth front, 46-tooth rear — and uses the same 520 chain pitch as stock, so no conversion is required. You are replacing worn components with a matched set at OEM spec.
The kit includes a Driven C45 steel case-hardened front sprocket, a Driven C45 steel alloy black case-hardened rear sprocket, and an RK 520 XRE sealed chain with a rivet-style master link. All three components are packaged together and sized for a direct bolt-on installation.
This kit carries RK’s 20,000-mile warranty.
Key Technology & Design
Steel Sprocket Construction
Both sprockets use Driven C45 steel with case hardening. The front sprocket is case-hardened and quenched. The rear is a steel alloy with a black finish. Steel is the right choice for a street-use OEM replacement — it outlasts aluminum under everyday riding conditions and holds up well under the mixed use the Ninja 650 and Z650 typically see.
RK 520 XRE Sealed Chain
The XRE is RK’s sealed chain in the 520 pitch. It uses an X-ring seal design to retain lubrication and reduce friction and wear at the chain joints. Tensile strength is rated at 8,200 lb / 36.5 kN. The chain comes pre-cut to length and includes a rivet-style master link. Finish is natural.
Matched Kit
Chain and sprocket pitch must always match — a 520 chain requires 520 sprockets. This kit is built as a matched set, so pitch compatibility is handled. Mixing chain and sprocket sizes from different pitches causes poor fitment and accelerated wear.
Specs
- Brand: RK / Driven
- Chain Type: 520 XRE
- Chain Size: 520
- Seal Type: X-Ring
- Master Link Connector Type: Rivet
- Tensile Strength: 8,200 lb / 36.5 kN
- Front Sprocket Tooth Count: 15
- Rear Sprocket Tooth Count: 46
- Front Sprocket Material: Steel (C45, case-hardened)
- Rear Sprocket Material: Steel alloy (C45, black case-hardened)
- Chain Finish: Natural
- Riding Style: Street
Fitment
Year(s) — Make / Model — Stock Gearing — Stock Chain
| 2006–2026 | Kawasaki Ninja 650 (EX650) | 15T / 46T | 520 |
| 2017–2026 | Kawasaki Z650 | 15T / 46T | 520 |
| 2009–2016 | Kawasaki ER-6N | 15T / 46T | 520 |
Gearing — Staying Stock or Making a Change
This kit matches the stock 15-tooth front and 46-tooth rear on the Ninja 650 and Z650. Installing it keeps your bike at factory stock gearing.
If you are considering a gearing change, here is the general framework. Going one tooth smaller on the front shortens gearing — quicker acceleration, higher RPM at highway speeds, reduced top speed. The effect is roughly equivalent to adding two to three teeth to the rear sprocket. Going one tooth larger lengthens gearing — lower cruise RPM, softer pull from a stop.
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.
