JT Sprockets Steel Front Countershaft Drive Sprocket (14-Tooth / 420 Pitch) — Part #JTF546.14 (13144-1022)
$5.00
Sale price
$5.00
Regular price
$19.99
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JT Sprockets Steel Front Countershaft Drive Sprocket (14-Tooth / 420 Pitch) — Part #JTF546.14 (13144-1022)
$5.00
Sale price
$5.00
Regular price
$19.99
Product Overview
The JT Sprockets Steel Front Countershaft Drive Sprocket (Part #JTF546.14) is a premium, high-strength replacement engine gear manufactured by the world's leading aftermarket sprocket brand, JT Sprockets. This 14-tooth front engine sprocket transfers raw mechanical engine power directly from the transmission countershaft to the rear wheel assembly via a standard 420-pitch drive chain. Engineered as an exact OEM replacement alternative or standard gearing modification, it optimizes final drive chain metrics to ensure incredibly fluid power delivery and reliable operation across street, off-road track, and youth motocross environments. [1, 2, 3, 4]
Technical Specifications
- Manufacturer: JT Sprockets
- Part Number: JTF546.14
- Product Type: Drive Train / Front Countershaft Engine Sprocket
- Material: Premium SCM420 chromoly steel alloy for absolute core hardness.
- Finish: Natural raw dark steel finish, bead-blasted and induction heat-treated.
- Size Profile: 14-Tooth (14T) profile configured exclusively for a 420 final drive chain pitch.
- Weight Profile: Ultra-lightweight mass distribution at approximately 0.20 lbs (90 grams).
- Fitment Type: Direct OEM replacement slider matching original manufacturer spline dimensions. [1, 2, 3, 4, 5, 6]
Key Features & Benefits
- Chromoly SCM420 Steel Alloy: Forged using advanced structural steel vectors designed to outlast traditional mild steel or surface-hardened aftermarket gears, resisting rounding and surface distortion under aggressive throttle loads. [1, 2]
- Bead-Blasted Surface Matrix: Undergoes computer-controlled heat-treatment and precision bead-blasting stages to dramatically lower structural surface tension, boosting component longevity. [1, 2]
- Fully Hobbed Tooth Profiles: CNC machined, fully hobbed, and drilled rather than cheap surface-stamped. This achieves incredibly narrow assembly tolerances and fluid chain-roller engagement. [1, 2]
- Zero-Play Tolerances: Engineered to meet or exceed strict factory dimensional clearance limits, eliminating shaft micro-wobble to keep power distribution linear and defend your transmission output shaft seals from stress-induced leaks. [1, 2]
Confirmed Motorcycle Fitment
This specific spline configuration and 420-14T layout is a confirmed direct fit for the following youth motocross and off-road platforms across 1976 to 2025 model years: [1, 2]
| Manufacturer | Model | Compatible Model Years | Chain Pitch / Teeth |
|---|---|---|---|
| Kawasaki | KX65 | 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 | 420 Pitch / 14-Tooth |
| Kawasaki | KX85 / KX100 / KX112 | Select Years (Check VIN) | 420 Pitch / 14-Tooth
|
| Suzuki | RM65 | 2003, 2004, 2005, 2006 | 420 Pitch / 14-Tooth |
| Yamaha | TT-R90 / TT-R90E | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 | 420 Pitch / 14-Tooth |
| Yamaha | PW80 / TT-R50 / TT-R110 | Select Years (Check VIN) | 420 Pitch / 14-Tooth |