PBI Steel Countershaft Sprocket 21-Tooth 530 Pitch - Harley Sportster
About PBI
PBI parts and accessories are stocked at Vtwinbikers for Harley-Davidson and Indian Motorcycle applications. Every PBI item we list is new and sourced through authorized distribution. If you are not certain a part matches your year and model, use Shop by Bike or email our team before you order and we will confirm fitment first.
Unleash more power and durability in your Sportster's drivetrain with the PBI Steel Countershaft Sprocket. This 21-tooth, 530-pitch sprocket is CNC machined from robust chromoly steel and heat-treated for superior wear resistance. It's a direct replacement designed for Harley-Davidson and Indian Motorcycle engines utilizing a 530 primary chain.
Why riders pick this
- CNC machined chromoly steel for superior strength
- Heat-treated for extended wear life
- Electroless nickel plating resists corrosion
- 21-tooth, 530-pitch for optimized gearing
- Designed for maximum spline-to-shaft contact
Optimizing your V-twin's gearing starts with a strong foundation, and the PBI Steel Countershaft Sprocket delivers just that. Crafted from chromoly steel and meticulously CNC machined, this sprocket is built to withstand the torque and demands of your Harley-Davidson Sportster. Its heat-treated construction and electroless nickel plating ensure extended wear life and protection against the elements, making it a reliable upgrade over stock.
Engineered for Strength and Longevity
- Precision CNC machined from durable chromoly steel
- Heat-treated for exceptional wear resistance and extended life
- Electroless nickel plating provides corrosion protection
- Broached for maximum spline-to-shaft contact, ensuring solid power transfer
- Meets or exceeds OEM specifications for quality and fitment
Upgrade Your Drivetrain with Confidence
Changing your countershaft sprocket is a common way to fine-tune your V-twin's performance, whether you're looking for quicker acceleration or more relaxed highway cruising. This PBI 21-tooth, 530-pitch sprocket is an excellent choice for riders seeking a robust and reliable component. Always confirm your motorcycle's current chain pitch and desired tooth count to ensure proper fitment and performance for your Harley-Davidson Sportster or other V-twin model.
Specifications
- Brand: PBI
- Manufacturer Part #: 277-21
- Teeth: 21
- Pitch: 530
- Length: 5.4 in
- Width: 5.7 in
- Height: 0.9 in
- Weight: 1.25 lbs
Common questions
Will this PBI countershaft sprocket fit my Harley-Davidson or Indian Motorcycle?
This 530-pitch, 21-tooth sprocket is designed for V-twin models that use a 530 primary chain. Please confirm your motorcycle's chain pitch and desired tooth count before ordering to ensure compatibility.
What tooth count is this specific sprocket?
This PBI countershaft sprocket features 21 teeth. Different tooth counts are available in the product catalog if you are looking for alternative gearing options.
Is this an OEM replacement or a performance upgrade?
PBI manufactures this sprocket to meet or exceed OEM specifications. Its chromoly steel construction and heat treatment offer enhanced durability compared to many stock components, making it a significant upgrade in terms of wear life.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | PBI |
| TYPE | Sprockets |
| SKU | 50-27721 |
| WEIGHT | 1.25 lb |
