An extender adds length slowly, and hours matter most. These numbers come from men who measured themselves in our PE Trainer app.
- +0.47 in
The typical man gained 0.47 inches of length after 12 months with a penis extender, the Epic Traction Report 2026 found (107 men).
- +1.02 in
The top 10% of men gained 1.02 inches or more by month 12, and the top 25% gained 0.75 inches or more (Epic Traction Report 2026, 107 men).
- 78%
78% of men who measured for 12 months or more gained length, according to Epic's PE Trainer app data (385 men).
- 90%
90% of men who logged 250 or more hours of traction measured longer than when they started, the Epic Traction Report 2026 found (81 men).
- 59%
59% of men with 250+ traction hours gained half an inch or more, and 20% gained an inch or more (Epic Traction Report 2026, 81 men).
- +0.55 in
The typical gain for men with 250+ traction hours was 0.55 inches, against 0.24 inches for men with 25 to 100 hours (Epic Traction Report 2026, 81 and 423 men).
- +0.12 in
Men who logged no traction hours still measured 0.12 inches longer. Epic treats that as measuring noise, not growth (Epic Traction Report 2026, 498 men).
- +0.59 in
Smaller starters gained the most. Men who started under 5.75 inches gained a typical 0.59 inches, against 0.26 inches for men who started over 6.75 inches (Epic Traction Report 2026, 124 and 190 men).
- 2.4%
Only 2.4% of men who trained 3 or more days a week lost length, against 9.5% of men who trained under 1.5 days a week (Epic Traction Report 2026, 165 and 95 men).
- 90+ min
Longer days did not add more. Men who wore an extender 90 or more minutes a day gained a typical 0.35 inches, and men at 45 to 90 minutes gained 0.39 inches (Epic Traction Report 2026, 174 and 223 men).
- +0.39 in
Men who used an extender and a pump gained a typical 0.39 inches of length, against 0.24 inches for men who only used an extender (Epic Traction Report 2026, 270 and 192 men).
- 0.00 in
Extending did not make men thinner. The median girth change for men who only used an extender was 0.00 inches (Epic Traction Report 2026, 183 men).
- 1.9 to 2.7 kg
Men build tension slowly. Typical Epic Pro tension rose from 1.9 kg in week 1 to 2.7 kg by week 13 (Epic Traction Report 2026, live sensor readings).
- 0.5 to 0.9 in
Published trials of penis extenders found length gains of 1.2 to 2.3 cm, about 0.5 to 0.9 inches, with 4 to 9 hours of wear a day (Gontero 2009, Nikoobakht 2011, Nowroozi 2015).