Rod Selection Guide

Honda GX Series

GX120

  • 6273   Billet, ARC, GX120

GX200 / 6.5 OHV Clone

  • 6270   3.303'', (+.010''), (+.020'')
  • 6394   Bearing, ARC
  • 8394   Bearing, EC, Teflon
  • DJ-1280   CAST Rod, 3.313'' (+.010''), Long
  • 6268   3.707'', Long Rod, for Wiseco Piston
  • 6765   3.525", Special Stroker Crank
  • 6768   3.575", Stroker Crank
  • 6234   3.595'', For Wiseco Piston
  • 6770-6771   UT2 (Extra Long Rod)
  • 6265   3.625'', Stroker Crank
  • CLONE   CAST Rod, GX200
  • 1/4" 12pt   Socket for ARC Billet Rods

GX270

  • 6261   Enduro
  • 6761   .975'' (+.020'')
  • 5544A27   Socket for ARC Billet Rods

GX390 / 13hp OHV Clone

  • 4440   4.440'' (+.030'') 
  • 6774   4.510'' (+.100'')
  • 6274   GX390 (+.040'')
  • 6272   4.410'' (Standard Length)
  • CLONE   CAST GX390 & 13hp OHV 
  • 5544A27   Socket for ARC Billet Rods

Predator

212 Predator

  • 6254   for Stock Piston
  • 6292   Bearing (Pair)
  • 6236   3.595'', for Wiseco Piston
  • 6255   3.707'', for Wiseco Piston
  • PRED   Stock Rod 
  • 1/4" 12pt  Socket for ARC Billet Rods

420 Predator

  • CLONE   420 Predator (GX390 +.020'') 

Briggs & Stratton

Briggs & Stratton Animal

  • 6248   Animal, 3.74'' x .4908''
  • 6240   Animal, Stroker 3.625'' x .4908''
  • 6249   Animal, 3.287'' ''Beefy''
  • 6247   Animal, 3.287'', ''Lite''
  • 555626   OEM Briggs Animal Rod
  • 6395   Replacement ARC Rod Bearing Set
  • 691664   Bolt, Rod, Briggs Animal

Briggs & Stratton World Formula

  • 6279    5.175'' Briggs Model 31 AVS Rod 7075-T6 aluminum.
  • 557117   OEM Briggs & Stratton Connecting Rod - World Formula
  • 690976   Genuine Briggs & Stratton Connecting Rod Screw

GX200 Rod FAQ

Which rod should I choose for my stock GX200 engine?

For a stock GX200 or clone engine, the ARC 6270 billet rod at 3.303'' (standard length) is the perfect upgrade. It's a direct replacement for the stock rod and provides significantly improved strength and durability for performance applications.

What does +.010'' or +.020'' mean on rod lengths?

The +.010'' and +.020'' designations indicate the rod is longer than stock by that amount. These longer rods are used when you've had your crankshaft machined or are using an oversized piston. Always match your rod length to your specific crankshaft and piston combination to maintain proper deck height.

Do I need a billet rod for my GX200?

If you're running a stock engine for recreational use, the stock rod is adequate. However, if you're building a performance engine, racing, or running higher RPMs (above 5,500), a billet rod is essential. Billet rods offer superior strength, reduced weight, and can handle the increased stress of modified engines.

What's the difference between the 6270 and the stroker rods?

The 6270 is designed for stock stroke cranks. Stroker rods like the 6265 (3.625''), 6768 (3.575''), or 6765 (3.525'') are specifically engineered for stroker crankshafts that increase engine displacement. Using the wrong rod length with a stroker crank will result in improper piston height and potential engine damage.

Which rod do I need for a Wiseco piston in my GX200?

Wiseco pistons typically require specific rod lengths. The 6234 (3.595'') or 6268 (3.707'') are designed specifically for use with Wiseco pistons. Check your specific Wiseco piston model to determine which length is required.

Can I reuse my stock rod bolts with a billet rod?

No, billet rods come with their own high-strength fasteners that are specifically designed for that rod. Always use the hardware provided with your billet rod. For ARC rods, you'll also need the special 1/4" 12-point socket to properly torque the rod bolts.

What are rod bearings and when do I need to replace them?

Rod bearings are the replaceable inserts between the connecting rod and crankshaft. ARC billet rods use replaceable bearings (6394 or 8394 Teflon) that should be inspected during rebuilds and replaced if worn, scored, or after high-stress racing applications.

What's the advantage of the UT2 extra long rod (6770-6771)?

The UT2 extra long rod is designed for specific stroker builds and big bore applications where you need to maintain proper rod ratio and piston position. This is an advanced modification typically used in high-performance racing builds. Consult with our technical team to ensure compatibility with your specific build.

Will a GX200 rod work in my clone engine?

Yes! Most GX200 billet rods are compatible with 6.5hp OHV clone engines (Predator 212 non-hemi, Ducar, etc.) as they share the same basic architecture. However, always verify your specific engine's stroke and piston specifications before ordering.

How do I know what torque specs to use on my billet rod?

Each billet rod manufacturer provides specific torque specifications. For ARC rods, follow the torque specs included with your rod. Generally, this is around 12-15 ft-lbs, but always refer to the manufacturer's instructions. Use a quality torque wrench and the proper 12-point socket for accurate installation.

Application Notes

Rod Length Selection: Choosing the correct rod length is critical for proper piston-to-valve clearance and compression ratio. Always verify compatibility with your specific piston and crankshaft combination.

Stroker Applications: Stroker cranks require specific rod lengths to maintain proper deck height and piston position. Consult with our technical team for stroker build recommendations.

Bearing Maintenance: Billet rods with replaceable bearings allow for rebuild and maintenance. Always use manufacturer-specified bearings and follow proper torque specifications.

Racing Applications: Billet connecting rods are essential for high-performance and racing engines, providing superior strength and reliability over stock cast rods.

For technical specifications, installation instructions, and compatibility questions, please contact our technical support team.