What is the main purpose of a tapered crankpin?

A tapered crankpin connects the connecting rods to the crankshaft. The taper helps to ensure a precise and secure fit, which is crucial for maintaining the balance and alignment of the engine's rotating assembly.

What does 'XL' refer to in the fitment for this crankpin?

'XL' refers to a specific model line of Harley-Davidson motorcycles, commonly known as the Sportster. This crankpin is designed for the crankshafts found in those particular models from 1957 to 1981.

Does this crankpin come with any hardware or instructions?

This listing is for the S&S Cycle 1.249-inch tapered crankpin only. It does not include additional hardware or installation instructions. Always refer to the official S&S Cycle service manual for your specific model for proper installation procedures.

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Trusted Since 1957

Est. 1957

Specifications

Brand: S&S Cycle
Part #: 34-2503
UPC: 34-2503

S&S Cycle 57-81 XL 1.249in Tapered Crankpin

Name: S&S Cycle 57-81 XL 1.249in Tapered Crankpin
Brand: S&S Cycle
SKU: s-s-cycle-s-s-cycle-57-81-xl-1-249in-tapered-crankpin-t14-662319
Price: 248.54 USD
Availability: BackOrder

$248.54

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Fits 1957-1981 XL models. S&S Cycle 1.249in tapered crankpin for engine rebuilds.

Key Features

Fits 1957-1981 Harley-Davidson XL models.
1.249-inch tapered crankpin.
Designed for crankshaft assembly rebuilds.
From well-known engine component manufacturer S&S Cycle.

This crankpin is designed for 1957-1981 Harley-Davidson XL models. Please verify fitment with your specific motorcycle before purchase.

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About this part

Product Details

This is the S&S Cycle 1.249-inch tapered crankpin, specifically made for 1957 through 1981 Harley-Davidson XL models. If you're rebuilding the crankshaft assembly on one of these bikes, this part is essential for properly connecting the connecting rods to the crankshaft. It's a critical component for the smooth operation of your engine.

S&S Cycle is well-known for making solid engine components, and this crankpin is no exception. It's built to the correct taper and diameter to ensure a secure fit with your XL's connecting rods and crankshaft. Getting the right taper and precise sizing is key here, as it helps maintain the alignment and balance of your rotating assembly. This means you can expect reliable performance from your engine rebuild.