Since 1952
America's Oldest Speed Shop ®
Speedway Motors Bill Smith

Aluminum Rear Sprocket, 5.25 Inch Bolt Circle


Material Type:
Sold in Quantity:
Overall Diameter:
Tooth Count:
Bolt Hole Pattern:
Material Thickness:
MFG. Part #:
Garage Sale:
Hole Diameter:
Inside Diameter:
Uses 520 chain.

Share by Email


Click image to enlarge




Q & A

What's in the Box

These lightweight 7075-T6 aluminum sprockets for Mini/Micro Sprints fit 6-lug hubs with 5-1/4" bolt circle. Available from 35-55 tooth. 


Fits Speedway part 960-1310, as well as Hyper, Stallard, RTS, PMP, Excell and other hubs.

You may also be interested in:

5.25 Inch 27-Spline Quick Change Sprocket
                        These 27-spline quick change sprocket carriers allow faster gear changes without the need for extra sprocket carriers. Includes nylon chain guards. For Stallard, PMP, Hyper, RTS and Others.
Sprint Racing 520 Gold Chain, 120 Links
                        High Quality of 120 links of 520 Gold chain. Full or half link sold separately. Works great for any Micro Sprint.
M&W Quick Change 27 Spline Sprocket Carrier w/ Chain Guard, 6.438 Inch

These 27-spline quick change sprocket carriers allow faster gear changes without the need for extra sprocket carriers. Includes chain guards. 


6.438 Inch for Bailey, Factor One, Sawyer and others


M&W SH-525-2 Non QC 27-Spline Sprocket Carrier w/ Chain Guard, 5.25 In

M&W Aluminum 27 Spline Sprocket Carriers with Chain Guards. Works great on any Mini Sprint Axle.

  • Non Quick Change
  • Durable
  • For Stallard, PMP, Hyper, RTS, and others
Garage Sale - Chain Tensioner Arm

This is garage sale priced because it has been discontinued. 



Use this lightweight and durable arm design to tension your chain drive and eliminate guide plates. Bearing mounted guide wheel fits any chain width and offers low resistance.

RK 520 XSO X-Ring Chain

A premium O-ring chain for the most demanding high performance applications. The X-ring shaped seal features two lubrication pools and seal points versus traditional O-ring chains. This design offers less torsional friction, increased high-stressed performance, and a 30% longer wear life.

Klotz KL-605 Synthetic Chain Lube Aerosol

Klotz Hi-Performance Chain Lube contains ExtraTac™ Anti-Wear System for all street, off-road, and racing applications. Specially formulated for conventional and O-ring type roller chains to provide the maximum level of lubrication and rust protection. Klotz ExtraTac™ Anti-Wear System penetrates deeply to displace moisture and dirt and allow for maximum corrosion protection.

Laser Chain Alignment Tool
  • No More Measuring!
  • Billet Construction
  • Precision Accuracy
Never lose a chain again!  Machined and factory calibrated for precision accuracy, this tool will save you time and money.  Simply use the thumb screw to fasten to the top of your rear sprocket and align to the center of your counter sprocket.
Stallard Chassis BC250-540 Sprocket Carrier and Rotor Hub
  • Fits any 1.75” x 27 spline rear axle
  • Use the same hub for drive sprocket or brake rotor
  • 5.25” bolt circle with six threaded ¼ x 20 mounting holes
Lucas 10525 Sprocket and Chain Lube, 4oz

Designed with an additive package to prolong the life of sprockets and chains. Fortified with “moly” and other dry film lubricants, you can expect less friction at high RPM’s for less drag and longer component life.

  • Water resistant
  • Heat resistant
  • Resist slinging
  • Less friction
  • Provides excellent anti-rust protection


1999-2012 Yamaha R6 Steel Counter Sprocket
                        1999 - 2012 Yamaha R6 steel counter sprocket.