# Piston Ring end gap

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This is an article from the TBolt USA Tech Database, the store's free online library of pit bike technical info. The text below is the article as written.

## Article

Check for Proper Ring End Gap
Normally new rings will be fine , but just to be sure.
Failure to ensure proper ring end gap may cause engine damage
Your looking to have a minimum clearance so the rings ends are not touching

Check the end gap by placing the ring into the cylinder
Use the piston to square up the ring in the bore
Check the end gap by using a feeler gage.

Your basic rule is 0.004" per I.0" of bore diameter

Honda 88cc Spec:
0.008"/0.2mm for top ring.
0.010"/0.254"mm for second ring
0.008"/0.2mm for oil rings

Here are KLX110 Specs:
Piston Ring End Gap

Standard: Service Limit:
Top 0.15 to 0.30 mm (0.006" to 0.012") 0.60 mm (0.024")

Second 0.30 to 0.45 mm (0.012" to 0.018") 0.80 mm (0.031")

Oil 0.10 to 0.60 mm (0.004" to 0.024") 0.90 mm (0.035")

Here is a guide from WISECO
[wiseco.com/auto/wiseco-auto-blog/everything-you-need-to-know-about-ring-gap](https://www.wiseco.com/auto/wiseco-auto-blog/everything-you-need-to-know-about-ring-gap/)

![Image: /Tech\_Data/uploads/images/1228001331.jpg](https://tboltusa.com/Tech_Data/uploads/images/1228001331.jpg)

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