21XZ-B VII Engine

21XZ-B VII

The perfect balance between price and performance.

As competition-level buggy engines go, the 21XZ-B VII is a super value! By making it lighter, lower and cooling running, it exceeds the expectations of even pro racers — delivering power comparable to the Speed Spec II at a lower price. 1/8 scale drivers looking for a performance advantage will find it with the 21XZ-B VII powerhouse!





  • Specifications
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  • Accessories
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Stock Number: OSMG2053
Displacement: .213 cu in (3.49 cc)
Bore: .641 in (16.27 mm)
Stroke: .661 in (16.8 mm)
Practical RPM: 3,000-41,500
Power Output: 2.7 hp @ 34,000 rpm
Weight: 12.77 oz (362 g)
Includes: 2282 carburetor, 6 mm and 7 mm carb restrictors, P3 glow plug, exhaust seal and dust cap set
Requires: glow fuel, muffler, tuned pipe and manifold

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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
 DTXP0310   DTXP0310  Duratrax Ultimate Glo-Starter C 1
 HCAP2550   HCAP2550  Hobbico 4-Way Wrench w/Plug Storage 1
 OSMG2360   72413000  O.S. Super 203 Air Cleaner Assembly 1

Optional Accessories

Stock Number Mfr Number Product Description Quantity Needed
 DTXP0315   DTXP0315  Duratrax Ultimate Glo-Starter D 1
 DTXP0320   DTXP0320  Duratrax Ultra Slim AA Glow Starter 1
 DTXP3000   DTXP3000  Duratrax Rapid Heat Glo-Starter w/Charger 1
 DTXP5701   DTXP5701  Duratrax Kwik Pit Universal Starter Box 1
 DTXR0185   DTXR0185  Duratrax Engine Tuning Screwdriver 1
 DTXR0187   DTXR0187  Duratrax Engine Tuning Tool 1
 GPMP3001   GPMP3001  Great Planes After Run Engine Oil 2 Fl Oz 1
 OSMG2648   71812000  O.S. Hyper Flywheel Set Mugen 28XZ 1
 OSMG2649   71813000  O.S. Hyper Flywheel Set Kyosho 28XZ 1
 OSMG2702   72106440  O.S. M2000SC Exhaust Manifold 1
 OSMG2717   72106480  O.S. M2002SC Manifold 21XZ-B 21VZ-B 25XZ 30VG 1
 OSMG2937   72106137  O.S. T-2060SC WN Tuned Pipe Complete Set 1
 OSMG2953   72106192  O.S. T-2090SC Silencer Set 21XZ-B 21VZ-B 25XZ 30VG 1
 OSMG2954   72106190  O.S. T-2090SC Silencer 21XZ-B 21VZ-B 25XZ 30VG 1
 OSMR2976   71521000  O.S. Long Socket Wrench With Plug Grip 1
 OSMR2977   71520100  O.S. Speed Plug Wrench 1
 OSMR3005   71410150  O.S. Speed Hex Wrench Driver 1.5mm 1
 OSMR3007   71410250  O.S. Speed Hex Wrench Driver 2.5mm 1
 OSMR3008   71410300  O.S. Speed Hex Wrench Driver 3.0mm 1
 OSMR3015   71411200  O.S. Speed Hex Wrench Ball Driver 2.0mm 1
 OSMR3016   71411250  O.S. Speed Hex Wrench Ball Driver 2.5mm 1
 OSMR3025   71412300  O.S. Speed Flat Blade Screwdriver 3.0mm 1
 OSMR3035   71413550  O.S. Speed Nut Driver 5.5mm 1
 OSMR3037   71413700  O.S. Speed Nut Driver 7.0mm 1
 OSMR4000   71415300  O.S. Speed Clutch Wrench & Adjuster 1
 OSMR4001   71415200  O.S. Speed Flywheel Key 1
 OSMR5005   71414015  O.S. Speed Hex Driver Replacement Tip 1.5 1
 OSMR5006   71414020  O.S. Speed Hex Driver Replacement Tip 2.0 1
 OSMR5015   71414120  O.S. Speed Ball Driver Replacement Tip 2.0 1
 OSMR5016   71414125  O.S. Speed Ball Driver Replacement Tip 2.5 1
 OSMR5025   71414230  O.S. Speed Screwdriver Flat Blade Replacement Tip 3.0 1
 OSMR5035   71414355  O.S. Speed Nut Driver Replacement Tip 5.5 1
21XZ-B VII Engine 21XZ-B VII Engine 21XZ-B VII Engine 21XZ-B VII Engine 21XZ-B VII Engine 21XZ-B VII Engine 21XZ-B VII Engine 21XZ-B VII Engine 21XZ-B VII Engine 21XZ-B VII Engine