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S&S CYCLE Cylinder Kit – 1200 cc Conversion – 10.3:1 Compression Ratio – Silver – XL

$ 978.95

In stock

Cylinder Kit – 1200 cc Conversion – 10.3:1 Compression Ratio – Silver – XL

Part #: 09310527

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S&S CYCLE Cylinder Kit – 1200 cc Conversion – 10.3:1 Compression Ratio – Silver – XL

Additional information

Weight 22.90 lbs
Part Number

09310527

Punctuated Part Number

0931-0527

Vendor Part Number

9100689

Vendor Punctuated Part Number

910-0689

Commodity Code

0931

Commodity Group

ENGINE GROUP

Commodity Type

CYLINDERS & PARTS

Product Description

S&S CYCLE Cylinder Kit – 1200 cc Conversion – 10.3:1 Compression Ratio – Silver – XL

Key Features

  • Converts ’86-’21 883 cc and 1200 cc Sportster models to 1250 cc displacement
  • Forged pistons have larger than stock valve pockets and accepts up to 2.00″ valves
  • Forged pistons – coated piston skirts with measurement window and S&S logo
  • No machining or rebalancing is required
  • Kit includes S&S 1250 cc pistons with rings and wristpins, S&S 3-9/16″ bore cylinders, MLS (Multi-Layer Steel) head, base and exhaust gaskets, assembly lube and instructions
  • Made in the USA
  • Will not work with XR1200 models.
  • 883 models will require the use of XL1200 cylinder heads to achieve correct compression ratios.
  • For the best performance CNC head porting, performance cams, exhaust and intake upgrades are recommended.

Technical Specifications

  • Weight: 22.90 lbs
  • Supplier Number: 910-0689
  • Unit of Measure: Kit

Current Warehouse Inventory

Stock by Location:

  • Janesville, WI: 5 units
  • Batavia, NY: 0 units
  • Dallas, TX: 0 units
  • Fresno, CA: 0 units
  • Reno, NV: 0 units
  • Asheville, NC: 0 units
  • National: 5 units

Total Available: 10 units

Inventory Last Checked: December 4, 2025 at 1:00 AM UTC

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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