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* These Spokes also fit Narrow Glide front hubs from 1973-2008 when used in conjunction with Aftermarket 19" Shallow Drop Centre rims
* Replaces OEM # 16101-01
Utilizes your factory brake caliper and brake hose
* Get the Most Out of engine
120" (3mm) wall tube uprights
Std Dome Top Pistons with 8.3:1 Compression Ratio. Fits Big Twin 1978-1984 with 1340cc Shovel Engine. BDL-PG-100A * These Spokes also fitFeatures & Benefits: * Bore = 3. 498" * Stroke = 4. 250" * Hypereutectic Alloy is a cast 16% silicon content material. * Perfect for air cooled engines. * Low thermal expansion rate = tighter piston to cylinder clearance. * Complete kit includes: two pistons, rings, wrist pins and clips. * Replaces OEM # 21990 80 Tech Tips: * 8. 3: 1 Compression Ratio with 117cc Head Chamber Volume. * Follow Ring End Gap & Piston to Cylinder Clearances as per the