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Tillotson 196R/Clone 68.50mm Oversize Piston Rings
68.50mm Oversize Piston Rings for 196cc Clone
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Tillotson 196R/Clone 68.50mm Oversize Piston Rings

Part Number: 168F-12302A
Online Price: $5.60
Phone Order Price:$5.99
You Save:$0.39(7%)
68.50mm Piston Rings – Clone 196cc Engines (Tillotson, Ducar, BSP)
Availability: In Stock.

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Description

68.50mm Oversize Piston Ring Set – For 196cc Clone Engines (Tillotson, Ducar, BSP)

High-quality oversize piston rings for bored 196cc clone engines – perfect for 68.50mm pistons or file-to-fit applications in 68.25mm builds.


Description

These 68.50mm 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 68.50mm pistons or can be file-fitted for tighter tolerances on 68.25mm 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 (68.50mm bore)
  • Compatible Engines: Tillotson 196R, Ducar 196, BSP 196, and similar clones
  • Dual Purpose Fit: For 68.50mm pistons or file-fit use with 68.25mm pistons
  • High RPM Ready: Ideal for performance engines and race applications
  • Precision Construction: Ensures tight seal and long-lasting durability


Application Notes:

  • Use in 68.50mm bore engines or file-fit in 68.25mm 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.

FAQ

Q1: What engines are compatible with these piston rings?

A: These rings are designed for 196cc clone engines bored to 68.50mm, including the Tillotson 196R, Ducar 196, BSP 196, and similar GX200-style clones.


Q2: Can I use these with a 68.25mm piston?

A: Yes, but you will need to file-fit the rings for proper gap clearance. This is a common tuning method for tight seal builds.


Q3: Will these fit my Honda GX200 or GX160 piston?

A: No. Clone piston rings may not properly fit OEM Honda pistons due to minor dimensional differences. Use clone rings with clone pistons only.


Q4: Are these good for performance builds?

A: Absolutely. These rings are commonly used in high-RPM kart racing engines and modified builds requiring strong cylinder sealing.


Q5: What comes in this piston ring set?

A: This set includes one full set of piston rings (top, second, and oil control rings) for one 68.50mm piston.

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