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Dynocams 68mm Standard Low Tension Rings
138190009 Tillotson Clone 68mm Standard Low Tension Rings
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Dynocams 68mm Standard Low Tension Rings

Part Number: DC-LT-STD
Online Price: $16.49
Phone Order Price:$18.99
You Save:$2.50(13%)
Low Tension Piston Rings for 68mm Clone Pistons – Fits 196cc Box Stock Engines
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Description

Low Tension Standard Piston Rings for 68mm Clone Engine Pistons – 196cc Box Stock & Race Classes


These low-tension standard piston rings are designed specifically for 68mm pistons commonly used in 196cc box stock clone engines and other small engine racing classes. Engineered to reduce friction while maintaining excellent ring seal, these rings are ideal for racers looking to gain a competitive edge through improved efficiency and minimized parasitic loss.


Perfect for box stockblueprinted, and restricted classes, these rings offer a performance-focused solution without deviating from standard piston dimensions. Lower tension means less drag on the cylinder wall, promoting quicker revs, cooler running temps, and better overall performance.


Key Features:

  • Fits standard 68mm clone engine pistons (196cc)
  • Low-tension design reduces internal friction
  • Enhances the ring seal for more efficient combustion
  • Ideal for box stock and other 196cc racing classes
  • Supports quicker throttle response and reduced heat buildup

Upgrade your race build with these precision low-tension 68mm piston rings—built for speed, reliability, and rule-compliant performance.



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: It is mandatory that all three rings 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. 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

(1") down in the cylinder.

Square ring with piston turned upside down.

 If ring supports itself it is legal.

FAQ

Q1: What engines are these piston rings compatible with?
A: These rings are designed for 68mm pistons commonly used in 196cc Honda GX200-based clone engines, including box stock racing builds.

Q2: What is the benefit of low tension rings?
A: Low tension rings reduce friction between the piston and cylinder wall, allowing for better throttle response, faster revs, and cooler engine temperatures.

Q3: Will these work in a stock class engine?
A: Yes, these are standard size rings and are designed to be compliant with most box stock and claimer class rule sets where low-tension rings are permitted.

Q4: Do these improve horsepower?
A: While they don’t directly increase horsepower, reducing friction and improving sealing can result in a more efficient engine, helping you extract more usable power.

Q5: Do I need special tools to install these rings?
A: Standard piston ring installation tools are recommended for precise fitment, but no special modifications are required beyond typical assembly practices.

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