Fenix TK20R UE vs Fenix TK25R size comparison
The Fenix TK25R is 10.3 mm (0.41 in) longer than the Fenix TK20R UE, and 2 mm wider at its widest point. It is 21 g heavier (with battery).
The Fenix TK25R is 10.3 mm (0.41 in) longer than the Fenix TK20R UE, and 2 mm wider at its widest point. It is 21 g heavier (with battery).
Dimensions
| Fenix TK20R UE Check price ↗ | Fenix TK25R Check price ↗ | |
| Length | 153.7 mm (6.05 in) | 164 mm (6.46 in)+10.3 mm |
| Head / width | 34 mm (1.34 in) | 36 mm (1.42 in)+2 mm |
| Body | 25.4 mm (1.00 in) | 26.2 mm (1.03 in)+0.8 mm |
| Weight | 204 g with battery | 225 g with battery+21 g |
| Battery | 21700 | One included 5000 V2.0 rechargeable Li-i |
| Max output | 2,800 lm | 3,600 lm |
| Throw | 465 m | 350 m |
| Type | Tactical | Tactical |
| Price | $89.95 at fenixlighting.com, as of Nov 4, 2026 | $139.95 at fenixlighting.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced | fenixlighting.com sourced |
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TK20R UE vs TK25R: how they differ
Size and weight
The Fenix TK20R UE is the shorter light: 153.7 mm (6.05 in) against 164 mm (6.46 in), a difference of 10.3 mm (6%). At its widest point the Fenix TK20R UE is 2 mm slimmer (34 vs 36 mm). The Fenix TK20R UE is 21 g lighter (204 g vs 225 g, with battery).
Brightness and throw
The Fenix TK25R is rated brighter: 3,600 lm maximum vs 2,800 lm for the Fenix TK20R UE, 29% more. For beam distance the Fenix TK20R UE reaches further: 465 m vs 350 m rated throw (33% more).
Battery
The Fenix TK20R UE runs on a removable 21700 battery; the Fenix TK25R runs on its own battery (One included 5000 V2.0 rechargeable Li-i).
Price
When we checked on Nov 4, 2026, the Fenix TK20R UE was $89.95 at fenixlighting.com and the Fenix TK25R $139.95 at fenixlighting.com, so the Fenix TK20R UE cost $50.00 less. Prices change often, so check the current price before you buy.
Type
Both are tactical lights in our catalog with a tube body.
Which should you buy?
Choose the Fenix TK20R UE if you want a shorter light (10.3 mm shorter), a slimmer profile (2 mm narrower), less weight (21 g lighter) and longer throw (465 m vs 350 m). Choose the Fenix TK25R if you want more output (3,600 lm vs 2,800 lm). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix TK20R UE Check price ↗ Fenix TK25R
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TK20R UE vs TK25R FAQ
Which is smaller, the Fenix TK20R UE or the Fenix TK25R?
The Fenix TK20R UE is the shorter light: 153.7 mm (6.05 in) against 164 mm (6.46 in), a difference of 10.3 mm (6%). At its widest point the Fenix TK20R UE is 2 mm slimmer (34 vs 36 mm). The Fenix TK20R UE is 21 g lighter (204 g vs 225 g, with battery).
Which is brighter, the Fenix TK20R UE or the Fenix TK25R?
The Fenix TK25R is rated brighter: 3,600 lm maximum vs 2,800 lm for the Fenix TK20R UE, 29% more. For beam distance the Fenix TK20R UE reaches further: 465 m vs 350 m rated throw (33% more).
Which is cheaper, the Fenix TK20R UE or the Fenix TK25R?
When we checked on Nov 4, 2026, the Fenix TK20R UE was $89.95 at fenixlighting.com and the Fenix TK25R $139.95 at fenixlighting.com, so the Fenix TK20R UE cost $50.00 less. Prices change often, so check the current price before you buy.
Do the Fenix TK20R UE and Fenix TK25R use the same battery?
The Fenix TK20R UE runs on a removable 21700 battery; the Fenix TK25R runs on its own battery (One included 5000 V2.0 rechargeable Li-i).
Compare Fenix TK20R UE with similar lights
Compare Fenix TK25R with similar lights
More
Sources
- Fenix TK20R UE: specs from Fenix product page (manufacturer). Drawing: outline from published specs. Price $89.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- Fenix TK25R: specs from Fenix product page (manufacturer). Drawing: outline from published specs. Price $139.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
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