Klarus XT21C vs Klarus XT2CR Pro 2025 size comparison
The Klarus XT2CR Pro 2025 is 16 mm (0.63 in) shorter than the Klarus XT21C, and 9 mm narrower at its widest point. Weights are published on different bases (listed vs listed), so compare them with care.
The Klarus XT2CR Pro 2025 is 16 mm (0.63 in) shorter than the Klarus XT21C, and 9 mm narrower at its widest point. Weights are published on different bases (listed vs listed), so compare them with care.
Dimensions
| Klarus XT21C Check price ↗ | Klarus XT2CR Pro 2025 Check price ↗ | |
| Length | 147 mm (5.79 in) | 131 mm (5.16 in)−16 mm |
| Head / width | 35 mm (1.38 in) | 26 mm (1.02 in)−9 mm |
| Body | 25 mm (0.98 in) | 25 mm (0.98 in)same |
| Weight | 110 g listed | 143 g listed |
| Battery | 21700 | 18650 |
| Max output | 3,000 lm | 2,300 lm |
| Throw | 324 m | 360 m |
| Type | Tactical | Tactical |
| Price | $104.95 at batteryjunction.com, as of Nov 4, 2026 | $74.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | batteryjunction.com sourced | batteryjunction.com sourced |
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XT21C vs XT2CR Pro 2025: how they differ
Size and weight
The Klarus XT2CR Pro 2025 is the shorter light: 131 mm (5.16 in) against 147 mm (5.79 in), a difference of 16 mm (11%). At its widest point the Klarus XT2CR Pro 2025 is 9 mm slimmer (26 vs 35 mm). Weights are published on different bases (Klarus XT21C: 110 g listed; Klarus XT2CR Pro 2025: 143 g listed), so they are not directly comparable.
Brightness and throw
The Klarus XT21C is rated brighter: 3,000 lm maximum vs 2,300 lm for the Klarus XT2CR Pro 2025, 30% more. For beam distance the Klarus XT2CR Pro 2025 reaches further: 360 m vs 324 m rated throw (11% more).
Battery
The Klarus XT21C runs on a removable 21700 battery; the Klarus XT2CR Pro 2025 runs on a removable 18650 battery. For scale, a 21700 cell is about 21 × 70 mm and a 18650 about 18 × 65 mm (nominal).
Price
When we checked on Nov 4, 2026, the Klarus XT21C was $104.95 at batteryjunction.com and the Klarus XT2CR Pro 2025 $74.95 at batteryjunction.com, so the Klarus XT2CR Pro 2025 cost $30.00 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 Klarus XT21C if you want more output (3,000 lm vs 2,300 lm). Choose the Klarus XT2CR Pro 2025 if you want a shorter light (16 mm shorter), a slimmer profile (9 mm narrower) and longer throw (360 m vs 324 m). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Klarus XT21C Check price ↗ Klarus XT2CR Pro 2025
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
XT21C vs XT2CR Pro 2025 FAQ
Which is smaller, the Klarus XT21C or the Klarus XT2CR Pro 2025?
The Klarus XT2CR Pro 2025 is the shorter light: 131 mm (5.16 in) against 147 mm (5.79 in), a difference of 16 mm (11%). At its widest point the Klarus XT2CR Pro 2025 is 9 mm slimmer (26 vs 35 mm). Weights are published on different bases (Klarus XT21C: 110 g listed; Klarus XT2CR Pro 2025: 143 g listed), so they are not directly comparable.
Which is brighter, the Klarus XT21C or the Klarus XT2CR Pro 2025?
The Klarus XT21C is rated brighter: 3,000 lm maximum vs 2,300 lm for the Klarus XT2CR Pro 2025, 30% more. For beam distance the Klarus XT2CR Pro 2025 reaches further: 360 m vs 324 m rated throw (11% more).
Which is cheaper, the Klarus XT21C or the Klarus XT2CR Pro 2025?
When we checked on Nov 4, 2026, the Klarus XT21C was $104.95 at batteryjunction.com and the Klarus XT2CR Pro 2025 $74.95 at batteryjunction.com, so the Klarus XT2CR Pro 2025 cost $30.00 less. Prices change often, so check the current price before you buy.
Do the Klarus XT21C and Klarus XT2CR Pro 2025 use the same battery?
The Klarus XT21C runs on a removable 21700 battery; the Klarus XT2CR Pro 2025 runs on a removable 18650 battery. For scale, a 21700 cell is about 21 × 70 mm and a 18650 about 18 × 65 mm (nominal).
Compare Klarus XT21C with similar lights
Compare Klarus XT2CR Pro 2025 with similar lights
More
Sources
- Klarus XT21C: specs from manufacturer published specs as listed by batteryjunction.com. Drawing: outline from published specs. Price $104.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
- Klarus XT2CR Pro 2025: specs from manufacturer published specs as listed by batteryjunction.com. Drawing: shape measured from manufacturer photo (batteryjunction.com), scaled to the published length and diameter. Price $74.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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