hi-torque cylinder base nuts are designed for big bore applications on all pre-Evolution Big Twins

Guides require reaming to final size for valves

3/4" OD with a 1" OD flange that is 1/8" thick

and 1941-195 Servi-Cars

For 1/2"-20 TPI risers we recommend Colony Machine Handlebar Riser Bolts SKU 007434

Fuel Reserve Bottle and Carrier Combo - Save $5.00! Subcategory_Bolts & Screws hi-torque cylinder base nuts arePerfect for cruising around town or long distance hauls. When you need it, you need it! This combo is for the Lowbrow Customs Fuel Reserve Bottle AND Reserve Bottle Carrier! Buy them together in this combo and you save $5. 00 versus buying them separately. The Lowbrow Fuel Reserve Bottle Holds 30 fl. oz. (887 ml) of fuel. These are ultra light, seamless extruded aluminum with an O ring sealed cap. Height 10 5 8 inches and Diameter 3 1 8 inches. The