Kimpex / Sunstar Steel Front Countershaft Drive Sprocket (14-Tooth / 428 Pitch) — Part #20314
$5.00
Sale price
$5.00
Regular price
$19.99
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Kimpex / Sunstar Steel Front Countershaft Drive Sprocket (14-Tooth / 428 Pitch) — Part #20314
$5.00
Sale price
$5.00
Regular price
$19.99
Product Overview
The Kimpex / Sunstar Steel Front Countershaft Drive Sprocket (Part #20314 / Kimpex SKU Cross-Reference) is a premium, high-strength replacement engine gear manufactured by Sunstar and distributed by Kimpex, a premier global powersports supplier. This heavy-duty 14-tooth front engine sprocket is built to manage primary power transmission by transferring high-torque rotation directly from your engine's transmission countershaft out to the final drive drivetrain via a standard 428-pitch drive chain. Serving as an exact OEM replacement alternative, it delivers smooth power-split mechanics, reliable speed indexing, and original factory longevity under rigorous trail and street usage. [1, 2, 3, 4]
Technical Specifications
- Brand / Manufacturer: Sunstar / Kimpex Distributed
- Part Number / SKU: 20314
- Product Type: Drive Train / Front Countershaft Engine Sprocket
- Material: Case-hardened, high-nickel chromoly steel matrix for exceptional internal core durability.
- Finish: Premium "Parkerizing" chemical surface finish for superior rust and anti-corrosion protection.
- Size Profile: 14-Tooth (14T) configuration cut specifically for a 428 final drive chain pitch.
- Fitment Type: Direct OEM replacement slider matching original manufacturer transmission splines. [1, 2, 3, 4]
Key Features & Benefits
- Chromoly Construction: Crafted using case-hardened structural steel specifically engineered to absorb hard shock loads without chipping, bending, or face-pocket rounding. [1, 2]
- Parkerized Outer Shield: A specialized chemical layer forms a rugged protective coating over the steel matrix, preserving the sprocket faces against corrosive track acids, moisture, mud, and intense weathering. [1, 2]
- Micro-Tolerance Spline Alignment: Computer machined to meet original factory clearance thresholds, eliminating countershaft play and micro-wobble to keep power distribution linear and protect transmission output shaft seals from leaks. [1, 2]
- Gearing Fine-Tuning: Serves as an ideal final-drive gearing selection to alter acceleration curves, low-end torque delivery, or top-speed efficiency on small-displacement platforms. [1]
Confirmed Vehicle Fitment
This 428-14T spline profile is a confirmed direct fit for various classic small-displacement street, dirt, and dual-sport platforms spanning 1974 to 2001 model years: [1]
| Manufacturer | Model / Series | Compatible Model Years | Chain Size / Teeth |
|---|---|---|---|
| Yamaha | Flagship Small-Displacement Platforms | 1974 - 2001 | 428 Pitch / 14-Tooth |
| Suzuki | Small-Displacement Dirt/Street Series | 1974 - 2001 | 428 Pitch / 14-Tooth |
| Honda | XR200R / XL125S / XL185S / ATC200X | Vintage Alignment | 428 Pitch / 14-Tooth |