7.5″inch Sealed Cartridge Bottom Bracket Square Taper with Keyway Part# 20431

7.5″inch Long, modern updated bottom bracket, square taper ends.
Works great for 4 stroke motors wide clearance, pull start applications,
tuned pipe clearance or any other build requiring
extra space between the pedals.
Euro Threaded, will works in new GT frame threaded bottom bracket.
If you plan on using it to replace the one included in your 4 stroke engine kit
you will need to make provisions for a chainring.
With 3/16 inch keyway.
Your options are to make a flat on the shaft to accommodate the cotter chainring
or use the 25 Tooth 5/8ths” Bore Chrome Trike Axle Sprocket Part# 10035 (Not Included)
Diameter of Shaft Outer: 5/8ths of an inch
Material: CNC aluminum, Steel, Rubber shields
Length: 205mm
Threading: 1.370″ X 24 tpi
Weight: 1lb 04oz
Threaded cups come off and thread in with Park Tool BBT-32
Need Park Tool BBT-32 to install.