Piston Kits and Components

WSM PISTON ASSY B. B. L/R.20

$ 187.71

In stock

Piston Kit – 68.50 mm – Big Bore Long Rod – Yamaha 350 Banshee

Part #: 09100277

WSM quality guaranteed.

Available for ship to store or drop ship.

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WSM PISTON ASSY B. B. L/R.20

Product Specifications

Weight	0.75 lbs
Part Number	09100277
UPC Code	865369039944
Punctuated Part Number	0910-0277
Vendor Part Number	505205685
Vendor Punctuated Part Number	50-520-5-685
Commodity Code	0910
Commodity Group	ENGINE GROUP
Commodity Type	PISTON & RING KITS
MPN	09100277
Brand	WSM
UPC	865369039944

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Get the performance you need with the WSM PISTON ASSY B. B. L/R.20, available now at Knobtown Cycle. Kansas City’s trusted source for quality motorcycle parts.

Product Description

PISTON ASSY B. B. L/R.20

Coated with MOS2 for high performance and heat absorption
Ported to match WSM Banshee sleeves
Made in Germany

Part Locations

Location	Available
Wisconsin (WI)	5
New York (NY)	0
Texas (TX)	0
Nevada (NV)	0
North Carolina (NC)	0
National Total	5

Stock levels last updated: December 22, 2025 10:16 AM

Professional Installation Available

Knobtown Cycle offers professional installation services. Contact us via a service request to learn more.

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Thank you for Shopping at Knobtown Cycle!

When you shop with us, you’re not just buying motorcycle parts — you’re supporting a small, family-run business rooted right here in the heartland of America. Every order helps us keep riders on the road and fuels our passion for serving the motorcycle community.
From all of us at Knobtown Cycle, thank you for choosing local and riding with us.

Kit Fox – Owner Knobtown Cycle

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Need help with installation? Our Service Department based in Kansas City, Missouri is here for you. Fill out a Service Request and lets get you rolling!