86-98 XL Sportster

Note: The S-pipe system has a 2-piece front header

For SwitchBlade®

Fits: > 1"/25

Fits 54-69 FL and 71-72 FX as a reproduction replacement item

Keith Black Hypereutec. Piston Kit Evo 84-99 +.040 Speglar/Mirror 86-98 XL Sportster8. 5: 1 CR. Piston weight 350gr. Piston pin weight 97gr. Head type: Flat top. Dome +1. 5cc. Compression height 1. 375". Bore 3. 4980". Stroke 4. 250" (4 1 4"). Rod length 7. 440". Cyl. length 5. 550". Comes with T5 heat treated 390 Hypereutectic cast pistons with 16% silicone levels which enables running a very tight clearance for longevity and hardly any piston noise. Note: Top compression ring will need additional clearance. See instructions. Fits: