Sunstar Powerdrive Steel Front Countershaft Sprocket (17-Tooth / 530 Pitch) — Part #51717
$5.00
Sale price
$5.00
Regular price
$63.99
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Sunstar Powerdrive Steel Front Countershaft Sprocket (17-Tooth / 530 Pitch) — Part #51717
$5.00
Sale price
$5.00
Regular price
$63.99
Product Overview
The Sunstar Powerdrive Steel Front Countershaft Sprocket (Part #51717) is a premium, competition-grade replacement engine drive gear engineered by Sunstar, a world-renowned manufacturer of original equipment (OE) and high-horsepower aftermarket motorcycle sprockets. This heavy-duty 17-tooth front sprocket anchors your motorcycle's primary drive system. It efficiently transfers massive engine power from the transmission countershaft directly to the rear wheel assembly via an industry-standard 530-pitch drive chain. Designed to meet or exceed strict factory build guidelines, it serves as an exact OEM replacement to restore smooth drivetrain dynamics, reliable speed indexing, and optimal power delivery. [1, 2]
Technical Specifications
- Manufacturer: Sunstar
- Part Number: 51717 (Industry cross-ref dimensions: JTF517.17)
- Product Type: Drive Train / Front Countershaft Engine Sprocket
- Material: Premium-grade, case-hardened chromium-molybdenum steel for the ultimate structural durability and core strength.
- Finish: Specialized "Parkerizing" chemical surface treatment for excellent rust and corrosion resistance.
- Size Profile: 17-Tooth (17T) tooth configuration mapped precisely for a 530 final drive chain pitch.
- Weight Profile: Precision engineered at approximately 0.75 lbs (340 grams) to minimize rotating mass.
- Fitment Type: Direct OEM replacement slider matching original manufacturer transmission splines. [1, 2, 3]
Key Features & Benefits
- Case-Hardened Chromoly Steel: Forged from an ultra-durable steel alloy specifically designed to handle the high rotational loads of high-displacement street superbikes, eliminating premature tooth rounding or pocket wear. [1, 2]
- Parkerized Outer Coating: Coated with a chemical substrate that bonds with the metal structure to defend against road salt, moisture, and extreme grime buildup, leading to an extended sprocket operational lifecycle. [1, 2]
- Micro-Tolerance Splines: Engineered with computer-aided design (CAD) tolerances to completely eliminate countershaft wobble, ensuring completely linear power delivery and safeguarding output shaft seals from leaks. [1, 2]
- OE-Trusted Longevity: Delivers original-equipment build metrics at a competitive price point, providing reliable tooth engagement and whisper-quiet chain roller interaction. [1]
Confirmed Motorcycle Fitment
This specific spline configuration and 530-17T offset is a confirmed direct fit for the following high-horsepower Yamaha flagship street superbikes across 1998 to 2024 model years: [1]
| Manufacturer | Model | Compatible Model Years | Chain Pitch / Teeth |
|---|---|---|---|
| Yamaha | YZF-R1 | 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
|
530 Pitch / 17-Tooth |
| Yamaha | YZF-R1M | 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 | 530 Pitch / 17-Tooth |
| Yamaha | YZF-R1S | 2016, 2017, 2018 | 530 Pitch / 17-Tooth |