Thumper 4-Stroke Semi-Synthetic Racing Oil

BelRay Thumper 4Stroke Racing Motor Oil is specifically engineered to meet the demands of single cylinder multivalve 4stroke racing engines The high temperatures and severe loads of racing require the exceptional film strength shear and temperature stability of BelRay Thumper 4Stroke Racing Motor Oil Sizes 1 Liter and 4 Liter Bottles Grades 10W40 and 20W50