Ryobi
Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer
$149Cheaper
Best String Trimmers · head-to-head
Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer vs Echo SRM-225 21.2cc Straight Shaft Gas String Trimmer
A sourced, side-by-side comparison. Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer is cheaper at $149. Every spec and price links to its source.
Which is better: the Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer or Echo SRM-225 21.2cc Straight Shaft Gas String Trimmer?
The Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer wins 1 of the 1 specs we compare head to head; the other wins 0. The Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer is the cheaper at $149. The Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer both leads on specs and costs less — the straightforward pick.
See Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer on Amazon See Echo SRM-225 21.2cc Straight Shaft Gas String Trimmer on Amazon
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer |  Echo SRM-225 21.2cc Straight Shaft Gas String Trimmer |
|---|---|---|
| US price | $149 | $279.99 |
| Brand | Ryobi | Echo |
| Released | — | — |
| Power source | battery | gas |
| Cutting swath (in) | 15 in | 17 in |
| Shaft type | straight | straight |
| Line diameter (in) | 0.080 in | 0.095 in |
| Feed type | bump | bump |
| Engine cc or voltage | 40 V | 21.2 cc |
| Weight (lb) | 8.92 | 11.5 |
| Release year | — | — |
Sources — Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer: ryobitools.com (verified 2026-06-19). Echo SRM-225 21.2cc Straight Shaft Gas String Trimmer: echo-usa.com (verified 2026-06-19).
What's the difference between the Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer and Echo SRM-225 21.2cc Straight Shaft Gas String Trimmer?
Where the two actually differ on the specs we track (5 of 7). Matching specs are omitted.
- Power source: Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer battery vs Echo SRM-225 21.2cc Straight Shaft Gas String Trimmer gas
- Cutting swath (in): Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer 15 in vs Echo SRM-225 21.2cc Straight Shaft Gas String Trimmer 17 in
- Line diameter (in): Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer 0.080 in vs Echo SRM-225 21.2cc Straight Shaft Gas String Trimmer 0.095 in
- Engine cc or voltage: Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer 40 V vs Echo SRM-225 21.2cc Straight Shaft Gas String Trimmer 21.2 cc
- Weight (lb): Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer 8.92 vs Echo SRM-225 21.2cc Straight Shaft Gas String Trimmer 11.5