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This is the O.S. Max .21 VZ-B V-Spec-T (P) Off-Road Competition Buggy Engine. Competitors tend to stick with a winner — and the .21 VZ-B V-Spec-T (P) makes that easy to do! Not to mention this engine won the 2006 IFMAR World Championships!
The raw power to exploit a split-second opportunity is there, tempered by the ability to fine-tune and finesse throttle control to the needs of different tracks and situations. And to help keep the .21 VZ-B V-Spec-T (P) at the peak of its power, O.S. has given it a billet aluminum piston, hardened ABC sleeve for added wear resistance and a new crankshaft design that's simultaneously slimmer and stronger than any O.S. crankshaft ever made. The .21 VZ-B V-Spec-T (P) — designed for first-place finishes over the long haul — from O.S.
This engine usually runs best in most conditions with the included OS P3 Turbo glow plug, however depending on the weather conditions the OS P6 plug can sometimes work better (usually in very humid or cold conditions). The best tuned pipe for this engine is the T-2050 tuned pipe, although the new OS T-2060 tuned pipe also works well. May be run with up to 30% nitro fuel without reshimming the engine, but an extra shim is included if you wish to add it to run 30% nitro fuel.
- More power and durability. The brass sleeve is chrome-plated for performance and hardened to withstand the wear that racing action can produce. CAD-refined and CNC-machined ports smooth airflow and boost power.
- Track-tune in seconds! Increase control on low-traction tracks by inserting the 8 mm (red) or 9 mm (blue) carb restrictor. Takes only a second, but pays off, lap after lap.
Features:
- Hardened, chrome-plated, 4-port, cylinder and liner for high durability and long life
- Machined steel piston features parallel rings that trap fuel oils and use them as a seal to enhance compression and boost power
- Reshaped crankcase core ensures smoother air flow and more consistent performance
- Slide Valve Carburetor with 8mm and 9mm Carb restrictors allow tuning to specific track conditions, Low-end Needle adjusts from side to side for maximum adjustment ease
- V-shaped two-piece turbo head design provides fast heat dissipation
Includes:
- One .21 VZ-B V-Spec-T (P) racing engine w/21C carburetor
- One P3 Ultra Hot Turbo plug
- One instruction manual w/OS decal
- One extra head shim/gasket(The other gasket is pre-installed)
- One 8mm carb restrictor
- One 9mm carb restrictor
- One exhaust port seal ring
- Two carb rubber gaskets
- One carb cover
- One exhaust cover
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