The RK 1042-140EX Chain and Sprocket Kit is an OEM replacement drivetrain package designed for the Honda CBR300R model years 2014 through 2022. It includes a premium Driven C45 steel alloy rear sprocket with a black case-hardened finish and a Driven C45 steel front sprocket that is case hardened and quenched for dependable service. The kit contains original-equipment gearing to support proper fitment and drivetrain performance.
Built as a high-mileage performance kit, the RK OEM Replacement package is suited to riders seeking durable replacement components for routine maintenance, commuting, touring, and everyday street use. The combination of hardened sprockets and quality RK components helps provide reliable chain engagement, consistent power transfer, and long-lasting performance when properly installed and maintained.
Fitment: Designed for Honda CBR300R motorcycles from 2014-2022. Manufacturer: RK. Vendor Part Number: 1042-140EX. The kit is supplied with natural-finish chain components and includes front and rear sprockets matched to the specified original-equipment gearing. Confirm motorcycle year, model, and existing drivetrain specifications before installation.
Features:
- Fitment: Honda CBR300R motorcycles from 2014-2022
- Kit Type: OEM replacement chain and sprocket kit
- Brand: RK
- Manufacturer: RK
- Vendor Part Number: 1042-140EX
- Rear Sprocket: Driven C45 steel alloy construction with a black case-hardened finish
- Front Sprocket: Driven C45 steel construction with case hardening and quenching
- Gearing: Original-equipment gearing for specified Honda fitment
- Performance: High-mileage design for dependable street and everyday use