Std Dome Top Pistons with 10.5:1 Compression Ratio. Fits Twin Cam 1999-2006 with Big Bore 88ci to 95ci Conversion. - Keith Black Pistons Transmission Externals BT 4 spd era * Cooler oil and reduced

* Cooler oil and reduced wear

* Fits FXBR Breakout 2018up

* Doesnt fit XL’07-09 (No ECU cutout) & XL883N Iron & XL1200V Severty-Twon or 1200X Fourty-Eight (Use # DS-1401-0628)

* All models require mirror extenders or mirrors to be run on controls

this allows you to fine tune adjust the height of your shift peg without removing the linkage from your bike

Std Dome Top Pistons with 10.5:1 Compression Ratio. Fits Twin Cam 1999-2006 with Big Bore 88ci to 95ci Conversion. - Keith Black Pistons Transmission Externals BT 4 spd era * Cooler oil and reducedFeatures & Benefits: * Bore=3. 875 * Stroke=4. 000 * 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. Tech Tips: * 10. 5: 1 Compression Ratio with 85cc Head Chamber Volume. * Follow Ring End Gap & Piston to Cylinder Clearances as per the supplied Manufacturers Instructions. *