Sunline Countershaft Front Sprocket (14-Tooth / 520 Pitch) — Part #1445-520-14
$5.00
Sale price
$5.00
Regular price
$34.99
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Sunline Countershaft Front Sprocket (14-Tooth / 520 Pitch) — Part #1445-520-14
$5.00
Sale price
$5.00
Regular price
$34.99
Product Overview
The Sunline Front Countershaft Sprocket (Part #1445-520-14) is a premium, heavy-duty drivetrain component engineered for motocross and off-road racing platforms. Distributed by Sunline (utilizing industry-standard 1445 core spline architectures), this 14-tooth front sprocket serves the vital purpose of anchoring your machine's primary drive, transferring power cleanly from the transmission countershaft to the rear wheel assembly via a standard 520-pitch chain. Built to meet strict OEM dimensional boundaries, it functions as a highly precise, bolt-on replacement or gearing modification to sharpen power delivery. [1, 2, 3]
Technical Specifications
- Brand / Distributor: Sunline
- Part Number: 1445-520-14 (Industry cross-ref profile: 1445 / JTF1445)
- Product Type: Drive Train / Front Countershaft Engine Sprocket
- Material: Case-hardened, high-grade SCM420 chromoly steel alloy for absolute dimensional toughness.
- Finish: Natural raw treated steel treated with rust and corrosion-inhibiting oil coatings.
- Size Profile: 14-Tooth (14T) configuration cut specifically for a 520 final drive chain pitch.
- Fitment Type: Direct OEM replacement slider matching original manufacturer spline dimensions. [1, 2, 3, 4, 5]
Key Features & Benefits
- Chromoly SCM420 Matrix: Fabricated from structural steel alloy that resists structural bending, chipping, and accelerated tooth breakdown under intense track conditions. [1, 2]
- Computer-Aided Hobbed Profile: Every single tooth is precision hobbed and drilled rather than stamped. This yields exceptionally tight side-clearance tolerances and reduces frictional drag against the chain rollers. [1]
- Induction Thermal Hardening: Fully heat-treated to optimize face surface rigidity while maintaining a shock-absorbing internal core to withstand sudden landing impacts. [1, 2]
- Drivetrain Preservation: Engineered to maximize contact area along the transmission splines, preventing countershaft rounding and eliminating micro-wobbles that cause output shaft seal leaks.
Confirmed Motorcycle Fitment
The 1445 spline architecture configured for a 520 chain pitch is a confirmed direct fit for the following off-road dirt bike platforms across 1994 to 2008 model years: [1]
| Manufacturer | Model | Compatible Model Years | Chain Pitch / Teeth |
|---|---|---|---|
| Kawasaki | KX125 | 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 | 520 Pitch / 14-Tooth |