Table of Contents

OS SPEED 21VZ-B V-Spec

Item
Manufacturer OS Engines
Model 21VZ-B V-Spec
Displacement 3.46cc/0.211cu in
Intake Ports 3
Exhaust Ports 1
Designed Use 1/8 Off Road

Variants

OS Speed 21VZ-B V-Spec

Variant
Bore x Stroke Part#13893
Rod Length Part#1
Intake Ports Part#13893
Exhaust Ports Part#13893
Sleeve Type ABC
Crankshaft Double Tungsten Slugged/DLC Coated/Silicone Fill
Crankshaft Diameter 14mm
Crank Nose SG Style
Rear Bearing Part#13893
Front Bearing Part#13893
Case
Carburetor SG Style
Head Turbo
Glow Plug Part#13893
Cooling Head Part#13893
Backplate Bump Start
Crank Nose SG Style
Weight Part#13893

OS Speed 21VZ-B V-Spec AL

OS Speed 21VZ-B V-Spec SpecII

Protek 321B Samurai V2

Ninja JX21 B01

Ninja JX21 B01A

Variant
OS Speed 21VZ-B V-Spec Original, Magnesium cooling head, 320.5g/11.3oz, Part#13893
OS Speed 21VZ-B V-Spec AL Same as original, Aluminum cooling head, 361.8g/12.46oz, Part#13894
OS Speed 21VZ-B V-Spec SpecII Same as original, Drilled Aluminum cooling head, 349g/12.32oz, Part#13811
Protek 321B Samurai V2 Same as Speed, Drilled Aluminum cooling head, 355g/12.52oz, Part#PTK-2500
Ninja JX21 B01 5 port version of Speed, Aluminum cooling head, 361.8g/12.46oz, Part#JX21B01
Ninja JX21 B01A Same as original JX, Drilled Aluminum cooling head, 374g/13.19oz, Part#JX21B01A