OS Engines

O.S. 120AX Special Ringed

120AX Special Ringed

"Special" features give this 120AX even more power!

Experience up to 8% more power in the same displacement with the 120AX Special! High-rpm "tweaks" include modified crankshaft port timing and a Velocity Stack on the carburetor. A 0.004" (0.1 mm) head gasket increases compression ratio for more power. For optimal results, pair it with the E-5020 Power Box Muffler!

Displacement: 1.2 cu in (20 cc) Output: 3.35 hp @ 9,500 rpm RPM Range: 1,800-9,500 Bore: 1.2 in (30.4 mm) Stroke: 1.1 in (27.5 mm) Requirements: 2-stroke glow fuel with 5-20% nitromethane content and 20% lubricant content, 15x10-12 or 16x8-10 propeller, Field equipment

Tower Hobbies Has Been Serving Hobbyists Since 1971 • Call 800-637-6050 or 217-398-3636
See Tower Hobbies Reviews at Bizrate.com
Hobbico, Hobby & Model Construction Supplies - Retail, Champaign, IL
We accept the following: We accept the following payment methods: Discover, MasterCard, Visa, American Express, Diners Club International, JCB, China UnionPay, PayPal, and BillMeLater.
Unauthorized use of any materials presented here is prohibited. Copying or reproducing any elements from this page is not permitted. All prices, descriptions and availability subject to change.
Copyright © 1994 - Tower Hobbies All rights reserved. Do not duplicate or redistribute in any form.