WE PUT HORSEPOWER TO WORK © CONTACT SECURE COMPANY INFORMATION MARINE PRODUCTS INDUSTRIAL PRODUCTS SALES & SERVICE LOCATOR 1 2 3 4 5 6 TWIN DISC STOCK TWIN (NASDAQ) Current Price: 19.870 1.730 Previous Close: 18.140 Open: 18.320 Volume: 31000 Exchange: NASDAQ Day High: 19.940 Day Low: 18.130 March 27, 2021 8:03 PM GMT+0100 Prices delayed at least 20 minutes SALES & SERVICE LOCATOR select PRODUCTS Literature Marine Warranty Info Industrial Warranty Info COMPANY Locations News Events Investor Relations Corporate Governance CUSTOMER SUPPORT General Contacts Sales and Service Locator Literature SOCIAL MEDIA LinkedIn YouTube ©2014 Twin Disc, Incorporated All Rights Reserved Secure Privacy Policy Terms & Conditions

WE PUT HORSEPOWER TO WORK © CONTACT SECURE COMPANY INFORMATION MARINE PRODUCTS INDUSTRIAL PRODUCTS SALES & SERVICE LOCATOR Corporate Home > Company > Careers International CAREERS — INTERNATIONAL Page Under Construction TWIN DISC STOCK TWIN (NASDAQ) Current Price: 19.870 1.730 Previous Close: 18.140 Open: 18.320 Volume: 31000 Exchange: NASDAQ Day High: 19.940 Day Low: 18.130 March 27, 2021 8:03 PM GMT+0100 Prices delayed at least 20 minutes PRODUCTS Literature Marine Warranty Info Industrial Warranty Info COMPANY Locations News Events Investor Relations Corporate Governance Careers US Careers International CUSTOMER SUPPORT General Contacts Sales and Service Locator Literature SOCIAL MEDIA LinkedIn YouTube ©2014 Twin Disc, Incorporated All Rights Reserved Secure Privacy Policy Terms & Conditions

WE PUT HORSEPOWER TO WORK © CONTACT SECURE COMPANY INFORMATION MARINE PRODUCTS INDUSTRIAL PRODUCTS SALES & SERVICE LOCATOR Corporate Home > Marine > Marine Products > Arneson Surface Drives ARNESON® SURFACE DRIVES ASD08 ASD10 ASD11 ASD12 ASD14 ASD15 ASD16 For the ultimate in speed, maneuverability, efficiency and dependability, nothing matches Twin Disc Arneson Surface Drives. Their surface-piercing propeller design reduces underwater drag by 50% compared to conventional submerged propeller drive systems. The only surfaces to contact the water are the propeller blades and a protective skeg. This results in higher overall speed, quicker acceleration and a better payload-to-power ratio. And 50% less drag significantly improves fuel economy while lowering operating costs. DOWNLOADS Choose a file select Contact Twin Disc for Survey Society Approvals and Classifications. Specifications subject to change without prior notice in the interest of continual product improvement PRODUCTS Literature Marine Warranty Info Industrial Warranty Info COMPANY Locations News Events Investor Relations Corporate Governance CUSTOMER SUPPORT General Contacts Sales and Service Locator Literature SOCIAL MEDIA LinkedIn YouTube ©2014 Twin Disc, Incorporated All Rights Reserved Secure Privacy Policy Terms & Conditions