Shopping Cart
Shop Now...
R/C Hobby Products
Additional Hobby Products
Shop by Brand Easy Pay Shop for Parts
New Items
Special Sales
  Electric Motors, Engines & Accessories > Components - R/C Engine > Crankshafts - R/C Engine [View Top Sellers for this Category] Bookmark this Page

O.S. - OSMG4522 OSM22422000 22422000 531028147713 4531028147713
Manufacturer Stock#
A Closer Look at This Product
  Tech Notes

Parts Compatibility

Browse O.S.

O.S. Crankshaft 21XZ-B Speed
O.S. Crankshaft 21XZ-B Speed
View Larger Picture

Parts Saver Eligible:Yes

Stock Number
Retail Price
Tower's Low Price
FREE shipping when ordering this item on our web site... click for more information
Stock Status
In Stock
Buy Now
Add to wish list
—— Share ——
Share on Twitter
Share on Pinterest Email This Page To A Friend

Quantity Discount
  Special Savings When Buying in Quantities
Special Stock Number Units at this Price Tower's Low Price Click to Order Quantity Discount Savings
O.S. Crankshaft 21XZ-B Speed Add to Wish List
324.68  Buy Now 15.30  
O.S. Crankshaft 21XZ-B Speed Add to Wish List
484.47  Buy Now 25.50  
O.S. Crankshaft 21XZ-B Speed Add to Wish List
803.20  Buy Now 46.75  

Tech Notes
    This is the Crankshaft for the O.S. Max XZ-B Speed Engine - OSMG2051
         The crankshaft fits into the crankcase and the clutch nut,
            flywheel, bearings and con rod mount to this shaft.

FEATURES: DLC coated crankshaft with silicone filled intake passage for improved fuel flow

INCLUDES: One Crankshaft for the O.S. Max .21 XZ-B Speed Engine

SPECS: Length: 76mm (2.99") Crankshaft threading: 1/4-28 Pilot shaft diameter: 5mm (.20") Crankshaft diameter: 7mm (.28") (flywheel position)

REQUIRES: Diassembling engine to install Crankshaft

dcw 1/27/11 ir/jxs

– If you need more information, use these O.S. resources –
Web Site:
Phone: 217-398-8970
  Postal Address:

Click here for Units of Measure Conversion Calculators

Parts Compatibility
Parts Compatibility for O.S. Crankshaft 21XZ-B Speed
This item is a replacement part for the following:
 LXAESC O.S. 21XZ-B Speed ABC w/21J2(B) Carb  (Parts List)

Tower Hobbies Has Been Serving Hobbyists Since 1971   •   Call 800-637-6050 or 217-398-3636
BizRate Customer Certified (GOLD) Site Shop Now Using PayPal
We accept the following:

Unauthorized use of any materials presented here is prohibited. Copying or reproducing any elements from this page is not permitted. All prices, descriptions and availability subject to change. Displayed within some areas of our web site, the Retail Price is suggested by the manufacturer or supplier, or estimated in keeping with standard industry practice. It may not represent the prevailing price in your area or a price that Tower Hobbies has ever offered for the item.
Follow Tower Hobbies On