Description
Overview:
This piston and ring set is a 34 mm (1.34 in) top-end replacement for selected Stihl handheld machines. The piston is typically made from a lightweight aluminium alloy for good heat transfer, while the rings are hardened steel to maintain a reliable gas seal. Fitting a new piston and rings restores compression, cold starting, power delivery and fuel efficiency in two-stroke engines. It is sized to suit Stihl cylinders used on popular models such as the BG 66 and BG 86 C, as well as related SH, BR and SR machines. Use it when the original piston is worn, scored or when ring end-gaps are out of tolerance. A correct 34 mm match helps ensure proper fit, smooth operation and long service life.
Key Features:
- 34 mm (1.34 in) diameter to suit specific Stihl two-stroke cylinders
- Aluminium alloy piston for low weight and effective heat dissipation
- Hardened steel rings to restore compression and reduce blow-by
- Precision-machined surfaces to support smooth running and longevity
- Helps recover power, throttle response and fuel economy after wear
- Compatible with a wide range of Stihl blowers, shredder vacs and sprayers
- Straightforward fitment for competent users with standard workshop tools
- Suitable for routine rebuilds or corrective repairs after scoring or seizure
- Durable construction to handle frequent starts and sustained high RPM use
- Supports reliable starting and cleaner exhaust when used with correct oil mix
Typical Applications:
Used during top-end rebuilds of Stihl two-stroke engines in leaf blowers, shredder vacs, backpack blowers and mistblowers. Ideal when engines show low compression, hard starting, loss of power, excessive smoke or ring wear. Suitable for professional landscaping, grounds maintenance, facilities management and domestic garden care.
Also known as:
34 mm piston assembly, piston and ring set, two-stroke blower piston, small engine piston (34 mm), cylinder piston for Stihl handhelds, replacement top-end parts, piston repair set, compression restore kit, 2T piston and rings.
Fits Models:
BG 56, BG 56 C, BG 66, BG 66 C, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C, BR 200, SR 200, SR 200-D, SR 200-Z
Alternate Part Numbers:
4241-030-2001, 42410302001
Product Specifications
| L&S Part No. | 4241 030 2001 |
|---|---|
| Manufacturer | Stihl |
| OEM No. | 42410302001 |
| Unit of Sale | 1 |
| Machine Type | Backpack Blowers, Blower/Shredders |
| Fits Brands | Stihl |
| Key Features | - 34 mm diameter fits specific Stihl two-stroke cylinders - Aluminium alloy piston for effective heat dissipation - Hardened steel rings restore compression and reduce blow-by - Compatible with Stihl BG, SH, BR, SR models - Suitable for routine rebuilds or corrective repairs |
| Fits Models | BG56 | BG66 | BG86 | BR200 | SH56, SH86 | SR 200 | SR 200-D | SR 200-Z |
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