JT Sprockets Steel Front Countershaft Drive Sprocket (14-Tooth / 520 Pitch) — Part #JTF1307.14 (23801-MBN-670)
$5.00
Sale price
$5.00
Regular price
$25.99
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JT Sprockets Steel Front Countershaft Drive Sprocket (14-Tooth / 520 Pitch) — Part #JTF1307.14 (23801-MBN-670)
$5.00
Sale price
$5.00
Regular price
$25.99
Product Overview
The JT Sprockets Steel Front Countershaft Drive Sprocket (Part #JTF1307.14) is a premium, competition-spec drivetrain component manufactured by the world's leading aftermarket sprocket brand, JT Sprockets. This 14-tooth front engine sprocket transfers mechanical engine power directly from the transmission countershaft to the rear wheel configuration via an industry-standard 520-pitch drive chain. Engineered as an exact OEM replacement alternative, selecting this ultra-durable 14T gear layout optimizes final drive mechanics to maximize explosive low-end grunt, throttle snap, and heavy corner-exit acceleration. [1, 2, 3, 4]
Technical Specifications
- Manufacturer: JT Sprockets
- Part Number: JTF1307.14
- Product Type: Drive Train / Front Countershaft Engine Sprocket
- Material: Premium SCM420/SCM415 chromoly steel alloy for absolute core hardness.
- Finish: Induction heat-treated and bead-blasted natural raw steel with protective oil coatings.
- Size Profile: 14-Tooth (14T) tooth pattern configured exclusively for a 520 final drive chain pitch.
- Weight Profile: Ultra-lightweight mass distribution at approximately 0.50 lbs (226 grams).
- Fitment Type: Direct OEM replacement slider matching original manufacturer transmission splines. [1, 2, 3, 4, 5, 6, 7, 8]
Key Features & Benefits
- SCM420 Chromoly Matrix: Forged from high-grade structural steel alloy that resists structural bending, chipping, and face pocket wear under extreme high-torque racing abuse. [1, 2]
- Precision Hobbed Profile: Every single tooth face is fully hobbed, computer machined, and drilled rather than cheap surface-stamped. This achieves incredibly narrow assembly tolerances and fluid chain-roller engagement. [1, 2]
- Advanced Thermal Treatment: Undergoes 10 rigorous quality control checks and targeted induction heat processing to yield an optimal balance between outer rigidity and a shock-absorbing core. [1, 2]
- Zero-Play Internal Clearance: Machined to hyper-exact factory boundaries to eliminate countershaft micro-play, keeping power delivery linear while safeguarding transmission output shaft seals from leaks. [1]
Confirmed Motorcycle Fitment
This specific spline configuration and 520 chain pitch profile is a confirmed direct fit for the following off-road and street platforms across 1998 to 2007 model years: [1, 2]
| Manufacturer | Model | Compatible Model Years | Gearing Context / Application
|
|---|---|---|---|
| Honda | XR650R | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 | Stock Gearing / Direct Replacement |
| Kawasaki | ZX-6R Ninja (ZX600 G1-G2, J1-J3) | 1998, 1999, 2000, 2001, 2002 | Custom 520 Chain Conversion Layout |
| Kawasaki | ZX-6R Ninja (ZX636 A1P) | 2002 | Custom 520 Chain Conversion Layout |
| Kawasaki | ZX-6RR Ninja (ZX600 K1, M1) | 2003, 2004 | Stock 520 Gearing Alignment |
| Kawasaki | ZX-6R Ninja (ZX636 B1, B2) | 2003, 2004 | Stock 520 Gearing Alignment |
| Kawasaki | ZX-6RR Ninja (ZX600 N1, N6F) | 2005, 2006 | Stock 520 Gearing Alignment |
| Kawasaki | ZX-6R Ninja (ZX636 C1, C6F, D6F) | 2005, 2006 | Stock 520 Gearing Alignment |