Genius Tools Piston Ring Compressor 100mm Length x 90mm–175mm Adjustable Range Heavy Duty Steel - ATC-100
- Genius Tools ATC-100 piston ring compressor adjusts from 90mm–175mm, helping match the tool to the required piston ring size.
- 100mm overall length provides broad compression coverage during piston ring installation for steadier, more controlled setup.
- Steel construction with a blue oxide finish helps resist corrosion in shop conditions while maintaining clear product identification.
- Two spring steel bands distribute compression pressure evenly, helping protect piston rings during installation.
- Thumb locking mechanism holds the selected diameter and supports quick adjustments when fitting the compressor around the piston.
Also Available in Other Lengths (6) Same tool, different length Show all 6 lengths Hide lengths
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Length 3" (75mm) · Product Type 53~125
Special Price $24.87 Regular Price $38.26
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Length 3" (75mm) · Product Type 90~175
Special Price $27.16 Regular Price $41.79
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Length 3-1/2" (90mm) · Product Type 53~125
Special Price $23.73 Regular Price $36.50
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Length 3-1/2" (90mm) · Product Type 90~175
Special Price $29.37 Regular Price $45.19
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Length 6" (150mm) · Product Type 90~175
Special Price $43.58 Regular Price $67.04
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Length 6-1/2" (165mm) · Product Type 90~175
Special Price $50.05 Regular Price $77.00
Also Available in These Sets (1) This item is included in each set below Show all 1 sets Hide sets
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Piston Ring Service Tool Set 9 Piece Universal Fit
Special Price $128.34 Regular Price $197.45
Genius Tools Piston Ring Compressor 100mm Length x 90mm–175mm Adjustable Range Heavy Duty Steel - ATC-100 Professional Piston Ring Compressor Tool
Designed for controlled piston ring installation, this adjustable piston ring compressor covers a 90mm to 175mm range for broad passenger-vehicle fitment. Its 100mm overall length helps keep compression consistent around the ring during engine assembly work.
Built from sheet steel with a blue oxide finish, the tool is made for repeated shop use while supporting reliable adjustments. Two spring steel bands apply even pressure, and a thumb locking mechanism helps secure the set diameter quickly.
Key Benefits
- Adjustable 90mm–175mm range supports common passenger vehicle piston sizes.
- 100mm overall length provides stable coverage during piston ring compression.
- Sheet steel construction with blue oxide finish helps resist corrosion.
- Two spring steel bands distribute pressure evenly to protect piston rings.
- Thumb locking mechanism enables quick sizing changes and secure holding.
- Meets or exceeds ANSI standards for professional safety and consistency.
- Backed by Genius Tools Limited Lifetime Warranty against manufacturer defects.
SKU PR-1755 is intended for professional technicians who need dependable piston ring compression across multiple jobs. Its durable steel build, even-pressure band design, and straightforward thumb lock support repeatable results and long-term service life in demanding workshop conditions.
| Brand | Genius Tools |
|---|---|
| Length | 4" (100mm) |
| Type | Automotive Tools |
| Product Type | 90~175 |
