Billy Exell and Jay Dickman each had two points while Evan Buitenhuis made 28 saves in the winning effort.
Tyler Jeanson got things started at 18:31 of the first period. He stepped around a defenseman, skated up the left wing and fired a wrist shot over the right shoulder of Hayden Lavigne to make it 1-0.
Exell extended the lead to 2-0 late in the second. Carter Johnson found him off the rush and he beat Lavigne for his third of the year.
Jackson Leppard cut the lead to 2-1, scoring a power play goal at 13:36 of the third. He put home a rebound after Buitenhuis made a blocker save and tallied his 11th of the season.
Lavigne was pulled for the extra attacker, but Dickman found a loose puck near the Thunder line and fired a shot into the empty net to make it 3-1.
Wichita wins for the first time in the season-series against Allen since November 14.
Dickman and Exell each had a goal and an assist. Carter Johnson, Logan Fredericks and Jacob Graves each collected helpers. Buitenhuis has wins in back-to-back starts.
The Thunder returns home on Friday night to start a three-game series against Idaho starting at 7:05 p.m.
With Wichita Thunder release
