S&S 89" Stroker Piston Set 3-1/2" +.010" Harley-Davidson FXRDG Disc Glide 1984
Product Details
These forged 89" stroker pistons for Harley-Davidson Evolution Big Twin engines directly replace S&S forged 92-2420 series pistons. They offer the same compression ratio, but increased strength with a low noise, low silicon, forged material. 3-1/2" bore.
NOTE: Only fits stock cylinder heads. For Evolution engines only.
Fit Guide
- Model
- 89" Stroker Piston Set
- Bore
- 3-1/2"
- Size
- 89"
- Piston Type
- Forged
- Size Over Standard
- +.010"
Product Fitment
This item fits the following applications:
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