Speed Tuned 12XZ (P) Spec II
By redesigning this proven powerhouse, O.S. is raising the bar for 1/10 scale racing engines. The enhancements may appear to be subtle, but they can make all the difference when it comes to taking the checkered flag.
- The Spec II boasts excellent mileage and an improved bottom end
- Holes machined into the aluminum outer head decrease overall weight to the bare minimum, and aid in cooling as well
- The crankcase and liner port have been designed to increase torque at low- to mid-speeds
- A special coating on the crankshaft reduces friction and wear
- Tungsten weights offer better balance at high rpm
- A newly designed cylinder head is 6mm shorter than previous heads for lower center of gravity
Holes machined into the aluminum outer head decrease overall weight to the bare minimum, and aid in cooling as well.
The crankcase and liner port have been designed to increase torque at low- to mid-speeds.
T-1060 L52 tuned silencer is fixed to the manifold with a pair pf aluminum clamps, which prevent the silencer from accidental disconnection during races. The new connecting system makes the fine adjustment of the talipipe direction possible.
- Specifications
- Parts Listing
- Accessories
- Gallery
Stock Number: OSMG1991
Displacement: 0.128 cu in (2.1 cc)
Bore: 0.543 in (13.8 mm)
Stroke: 0.55 in (14.0 mm)
Practical rpm: 5,000-44,000
Output: 1.73 hp @ 35,000 rpm
Weight: 7.8 oz (220 g)
Includes: 12F(B) carburetor, RP6 glow plug, exhaust seal ring, dust cap set and a 5.5mm red carb reducer
Displacement: 0.128 cu in (2.1 cc)
Bore: 0.543 in (13.8 mm)
Stroke: 0.55 in (14.0 mm)
Practical rpm: 5,000-44,000
Output: 1.73 hp @ 35,000 rpm
Weight: 7.8 oz (220 g)
Includes: 12F(B) carburetor, RP6 glow plug, exhaust seal ring, dust cap set and a 5.5mm red carb reducer
Primary Accessories
| Stock Number | Mfr Number | Product Description | Quantity Needed |
| ODOP3320 | ODOP3320 | O'Donnell 20% Racing Quart | 1 |
Field Equipment
| Stock Number | Mfr Number | Product Description | Quantity Needed |
| DTXP0300 | DTXP0300 | Duratrax Glow Starter C Battery | 1 |
| FUGP4202 | 4200BP2 | Fuji Batteries C Alkaline Battery (2) | 1 |
| HCAP2550 | HCAP2550 | Hobbico 4-Way Wrench w/Plug Storage | 1 |
Optional Accessories
| Stock Number | Mfr Number | Product Description | Quantity Needed |
| DTXR0185 | DTXR0185 | Duratrax Engine Tuning Screwdriver | 1 |
| DTXR0187 | DTXR0187 | Duratrax Engine Tuning Tool | 1 |
| HCAP3001 | HCAP3001 | Hobbico After Run Engine Oil 2 Fl Oz | 1 |
| OSMG2384 | 72412000 | O.S. Super Air Cleaner 202 | 1 |
| OSMG2389 | 72412200 | O.S. 202 Elements (4) | 1 |
| OSMG2608 | 72106400 | O.S. M1011SC T-1040SC L52 Manifold | 1 |
| OSMG2609 | 72106410 | O.S. M1011SC Manifold T-1040SC R52 | 1 |
| OSMG2617 | 72106420 | O.S. M1001 Manifold | 1 |
| OSMG2633 | 72106172 | O.S. Header Pipe Spring | 1 |
| OSMG2639 | 72103180 | O.S. M1010 FWO5R Manifold | 1 |
| OSMG2961 | 72106042 | O.S. Joint Spring T-2040 | 1 |
| OSMG2970 | 72103051 | O.S. T-1040 L52 Left Side Tuned Pipe | 1 |
| OSMG2972 | 72103056 | O.S. T-1040 R52 Right Side Tuned Pipe | 1 |
| OSMG2981 | 72106600 | O.S. T-1050SC L52 Pipe | 1 |
| OSMG2982 | 72106320 | O.S. T-1040SC R52 Right Side Tuned Pipe | 1 |
| OSMG5673 | 22826140 | O.S. Exhaust Gasket 21RZ | 1 |
| OSMG5874 | 73300305 | O.S. Dust Cap Set 3mm (5) Carburetor Nipple | 1 |
| OSMG5886 | 73301612 | O.S. Dust Cap Set 16mm (3) | 1 |
| OSMG8871 | 21427200 | O.S. Exhaust Seal O-Ring (2) | 1 |
| OSMG8875 | 72103310 | O.S. Joint Tube 15RX | 1 |
| OSMR2976 | 71521000 | O.S. Long Socket Wrench With Plug Grip | 1 |
| SULQ2387 | S187 | Sullivan CT-1 Screen Fuel Filter | 1 |
