Sunstar Powerdrive Steel Front Countershaft Sprocket (13-Tooth / 428 Pitch) — Part #22313 (23801-K28-910)
$5.00
Sale price
$5.00
Regular price
$49.99
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Sunstar Powerdrive Steel Front Countershaft Sprocket (13-Tooth / 428 Pitch) — Part #22313 (23801-K28-910)
$5.00
Sale price
$5.00
Regular price
$49.99
Product Overview
The Sunstar Powerdrive Steel Front Countershaft Sprocket (Part #22313) is a premium, high-strength replacement engine gear manufactured by Sunstar, a global leader in original equipment (OEM) and precision aftermarket drivetrain components. This 13-tooth front engine sprocket efficiently transfers raw power directly from the transmission countershaft out to the final drive assembly via a standard 428-pitch drive chain. Built to fulfill or exceed strict factory quality guidelines, this sprocket serves as a highly precise, bolt-on replacement or target gearing adjustment swap to optimize low-end torque, trail snapping mechanics, and acceleration response on small-displacement youth platforms. [1]
Technical Specifications
- Manufacturer: Sunstar
- Part Number: 22313
- Product Type: Drive Train / Front Countershaft Engine Sprocket
- Material: Case-hardened, high-grade chromium-molybdenum steel for superior core toughness.
- Finish: Premium "Parkerizing" chemical surface finish providing advanced rust and corrosion resistance.
- Color: Parkerized Matte Black / Natural Dark Raw Steel.
- Size Profile: 13-Tooth (13T) tooth configuration mapped precisely for a 428 final drive chain pitch.
- Fitment Type: Direct OEM replacement slider matching original manufacturer spline dimensions. [1, 2, 3]
Key Features & Benefits
- Case-Hardened Steel Core: Formulated from premium chromoly steel alloys via advanced heat treatment to minimize tooth rounding, face pocket wear, or gear tooth breakdown under severe trail stress. [1, 2]
- Anti-Corrosion Parkerized Layer: Undergoes a specialized chemical substrate conversion that prohibits rust and oxidation, resulting in a significantly longer-lasting component appearance. [1, 2]
- Micro-Tolerance Spline Alignment: Computer machined to meet the hyper-exact factory dimensional metrics trusted by global motorcycle manufacturers since 1946, eliminating shaft micro-wobbles to protect output shaft seals from leaks. [1]
- Acceleration Optimization: Transitioning your countershaft configuration to this durable 13T gear layout customizes your final drive ratio, supplying exceptional low-end snap out of corners and tight track sections.
Confirmed Motorcycle & ATV Fitment
This specific "223" spline footprint configured for a 428 chain pitch is a confirmed direct fit for the following youth off-road and sport riding platforms:
| Manufacturer | Model | Compatible Model Years | Chain Pitch / Teeth |
|---|---|---|---|
| Honda | CRF125F / CRF125FB (Big Wheel) | 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 | 428 Pitch / 13-Tooth |
| Honda | TRX90 / TRX90EX / TRX90X (Sport ATV) | 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 | 428 Pitch / 13-Tooth |