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Tillotson 196R/Clone 68.25mm Oversize Piston Rings
68.25mm Oversize Piston Rings for 196cc Clone
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Tillotson 196R/Clone 68.25mm Oversize Piston Rings

Part Number: 168F-12301-A
Online Price: $5.43
Phone Order Price:$5.99
You Save:$0.56(9%)
68.25mm Piston Rings – Oversize for 196cc Clone Engines
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Description

68.25mm Oversize Piston Ring Set – For 196cc Clone Engines (Tillotson, Ducar, BSP)

High-quality oversize piston rings for bored 196cc clone engines – perfect for 68.25mm pistons or file-to-fit applications in 68mm builds.


Description

These 68.25mm oversize piston rings are designed for use in Box Stock 196cc Clone engines that have been bored out for performance or rebuild purposes. Ideal for engines like the Tillotson 196R, Ducar 196, and BSP 196, these rings are precision-made to fit 68.25mm pistons or can be file-fitted for tighter tolerances on 68mm pistons in 68.25mm bores.


Whether you're building for racing or restoring a worn-out bore, these rings provide the sealing performance and durability needed to handle increased cylinder pressure and RPM.

Note: If you're using an original Honda GX200 or GX160 piston, these rings may not fit properly. Always pair clone rings with clone pistons for correct fitment.


Key Features:

  • Fits: Bored 196cc clone engines (68.25mm bore)
  • Compatible Engines: Tillotson 196R, Ducar 196, BSP 196, and similar clones
  • Dual Purpose Fit: For 68.25mm pistons or file-fit use with 68mm pistons
  • High RPM Ready: Ideal for performance engines and race applications
  • Precision Construction: Ensures tight seal and long-lasting durability


Application Notes:

  • Use in 68.25mm bore engines or file-fit in 68mm bores for tighter ring gaps
  • Not compatible with OEM Honda GX200/GX160 pistons – must use clone pistons

AKRA 2020 Rules for Rings

Top ring and middle ring .115" max-width, .060" max thickness.) Filing of ring end gaps permitted including oil expander, max end gap .040". (top rings only.) The lapping of rings permitted for proper seal. Piston Ring must be on the piece (unbroken) when presented for tech. Piston Rings must be self-supporting in the cylinder bore when checked installed on the piston with a connecting rod attached (rod cap and bolts installed are not required for this check). 


NKA 2020 Rules for Rings:

40.4.13: Piston Rings

40.4.13.1: All three rings must be intact and functional.

40.4.13.2: Top ring must be the chrome face ring

40.4.13.3: No alterations of rings are permitted.

40.4.13.4: Ring Sizes

-Top Ring

.058" +/-.005" height & .115"maximum width.

- Middle Ring

.058" +/-.005" height & .115" maximum width.

- Oil Expander Ring (reference)

.095" +/-.005" height & .092" +/-.005" width

40.4.14: Ring Tension Requirement

- Top two rings must support themselves in the cylinder when removed from

the piston. They cannot fall through the cylinder.

- Bottom ring is a non-tech item regarding tension. The bottom expander ring & two

rail rings, when mounted on piston and rod in place, should support the piston in

the cylinder when inserted upside-down.

40.4.15: Ring Tension Inspection Procedure

- Top 2 rings must support themselves without assistance in the cylinder.

- Each of the top two rings should be placed, individually, approx. one inch

down in the cylinder.

- Square ring with piston turned upside down.

- If the ring supports itself, it is legal.

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