Fenix TK11R vs Fenix TK20R UE size comparison
The Fenix TK20R UE is 8.2 mm (0.32 in) longer than the Fenix TK11R, with about the same max diameter/width. Weights are published on different bases (with battery vs without battery), so compare them with care.
The Fenix TK20R UE is 8.2 mm (0.32 in) longer than the Fenix TK11R, with about the same max diameter/width. Weights are published on different bases (with battery vs without battery), so compare them with care.
Dimensions
| Fenix TK11R Check price ↗ | Fenix TK20R UE Check price ↗ | |
| Length | 145.5 mm (5.73 in) | 153.7 mm (6.05 in)+8.2 mm |
| Head / width | 34 mm (1.34 in) | 34 mm (1.34 in)same |
| Body | 23.5 mm (0.93 in) | 25.4 mm (1.00 in)+1.9 mm |
| Weight | 117.5 g without battery | 204 g with battery |
| Battery | 18650 / 2x CR123A | 21700 |
| Max output | 1,600 lm | 2,800 lm |
| Throw | 420 m | 465 m |
| Type | Tactical | Tactical |
| Price | $86.95 at fenixlighting.com, as of Nov 4, 2026 | $89.95 at fenixlighting.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced | fenixlighting.com sourced |
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TK11R vs TK20R UE: how they differ
Size and weight
The Fenix TK11R is the shorter light: 145.5 mm (5.73 in) against 153.7 mm (6.05 in), a difference of 8.2 mm (5%). At their widest points they are about the same (34 vs 34 mm). Weights are published on different bases (Fenix TK11R: 117.5 g without battery; Fenix TK20R UE: 204 g with battery), so they are not directly comparable.
Brightness and throw
The Fenix TK20R UE is rated brighter: 2,800 lm maximum vs 1,600 lm for the Fenix TK11R, 75% more. For beam distance the Fenix TK20R UE reaches further: 465 m vs 420 m rated throw (11% more).
Battery
The Fenix TK11R runs on removable 18650 / 2x CR123A batteries; the Fenix TK20R UE runs on a removable 21700 battery. For scale, a 18650 cell is about 18 × 65 mm and a 21700 about 21 × 70 mm (nominal).
Price
When we checked on Nov 4, 2026, the Fenix TK11R was $86.95 at fenixlighting.com and the Fenix TK20R UE $89.95 at fenixlighting.com, so the Fenix TK11R cost $3.00 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 TK11R if you want a shorter light (8.2 mm shorter). Choose the Fenix TK20R UE if you want more output (2,800 lm vs 1,600 lm) and longer throw (465 m vs 420 m). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix TK11R Check price ↗ Fenix TK20R UE
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
TK11R vs TK20R UE FAQ
Which is smaller, the Fenix TK11R or the Fenix TK20R UE?
The Fenix TK11R is the shorter light: 145.5 mm (5.73 in) against 153.7 mm (6.05 in), a difference of 8.2 mm (5%). At their widest points they are about the same (34 vs 34 mm). Weights are published on different bases (Fenix TK11R: 117.5 g without battery; Fenix TK20R UE: 204 g with battery), so they are not directly comparable.
Which is brighter, the Fenix TK11R or the Fenix TK20R UE?
The Fenix TK20R UE is rated brighter: 2,800 lm maximum vs 1,600 lm for the Fenix TK11R, 75% more. For beam distance the Fenix TK20R UE reaches further: 465 m vs 420 m rated throw (11% more).
Which is cheaper, the Fenix TK11R or the Fenix TK20R UE?
When we checked on Nov 4, 2026, the Fenix TK11R was $86.95 at fenixlighting.com and the Fenix TK20R UE $89.95 at fenixlighting.com, so the Fenix TK11R cost $3.00 less. Prices change often, so check the current price before you buy.
Do the Fenix TK11R and Fenix TK20R UE use the same battery?
The Fenix TK11R runs on removable 18650 / 2x CR123A batteries; the Fenix TK20R UE runs on a removable 21700 battery. For scale, a 18650 cell is about 18 × 65 mm and a 21700 about 21 × 70 mm (nominal).
Compare Fenix TK11R with similar lights
Compare Fenix TK20R UE with similar lights
More
Sources
- Fenix TK11R: specs from Fenix product page (manufacturer). Price $86.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- Fenix TK20R UE: specs from Fenix product page (manufacturer). Price $89.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
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