Hobby & Model Warehouse

Schnuerle-ported, bored-out and built light, to put more power in planes where a .40 size engine won't fit

Great for touch and goes and other fun fly stunts

Twin ball bearings and a specially treated steel sleeve lessen friction and extend engine life

Favorites for mid-size models, the economical GS-40 uses improved porting and timing to produce over 15% greater power than it's Series forerunners...and up to 25% more than typical sport .40s!

Improved design for stronger performance—yet still very economical

Bolt through silent muffler adds to savings and substantially reduces noise levels without power loss

Features Schnuerle porting, ball bearings and a lightweight cast head

Favorites for mid-size models, the economical GS-45 uses improved porting and timing to produce over 15% greater power than it's Series forerunners...and up to 25% more than typical sport .40s!

Extra punch for .40-size models, too!

Bored-out for more punch and less weight

Features Schnuerle porting and twin bearings

New 1-piece crankcase improves rigidity and dependability

Schnuerle-ported, with dual bearings and a lightweight cast head for smooth, cool-running performance

Features low-friction steel sleeve

Exhaust stack and bolt-through muffler preserve crankcase threads and allow more muffler positioning options

New 1-piece crankcases improve rigidity and dependability

Schnuerle-ported, with dual bearings and a lightweight cast head for smooth, cool-running performance

High-compression ABC construction offers extra power for aerobatics

Exhaust stack and bolt-through muffler preserve crankcase threads and allow more muffler positioning options

Nearly 25% more stunt power for .60-size aerobats

New, 1-piece crankcase for added stability, strength and dependability

Common SuperTigre TST-porting aids fuel economy front/rear bearings smooth running, extend life

New, bolt through muffler attaches to exhaust stack prevents stripped crankcase threads, aids positioning

90-size power that fits in a .60-size frame!

New, 1-piece crankcase for added stability, strength and dependability

Common SuperTigre TST porting aids fuel economy front/rear bearings smooth running, extend life

New, bolt through muffler attaches to exhaust stack prevents stripped crankcase threads, aids positioning