Centering,Thrust & Cluster Rings
Centering rings are used to keep a small tube nested within a large one. For example BT50/BT20 will center BT20 tube inside the BT50.
Thrust rings or engine blocks are glued inside the motor mount and prevent motors from going forwards. Model rocket motors with a thrust ring (such as Aerotech motors) do not require an engine block installed in the rocket. Motors without a thrust ring (such as Estes A/B/C/D/E) require a motor block installed in the rocket. Cluster rings hold several motor tubes.
We offer centering and cluster rings for low, mid and high-power rockets, you can narrow your selection by clicking buttons below.
Thrust rings or engine blocks are glued inside the motor mount and prevent motors from going forwards. Model rocket motors with a thrust ring (such as Aerotech motors) do not require an engine block installed in the rocket. Motors without a thrust ring (such as Estes A/B/C/D/E) require a motor block installed in the rocket. Cluster rings hold several motor tubes.
We offer centering and cluster rings for low, mid and high-power rockets, you can narrow your selection by clicking buttons below.
 Thrust Rings |
 Smaller Centering Rings |
 Larger Centering Rings (>=29mm) |
 Cluster Rings |
 Back to Build Supplies |
BT80 - 29mm Centering Ring. 2 pack
2 of BT80 - 29mm centering ring holds 29mm motor tube inside BT-80 airframe. 1/8" plywood. Fits into any 2.6" BT-80 tube. Works best with LOC paper,...
BT80 - 29mm Centering Ring (TW). 2 Pack
BT80 - 29mm centering ring holds 29mm motor tube inside BT-80 airframe. 1/8" plywood. Fits into any 2.6" BT-80 tube. Works best with Rocketarium (TW)...
1.1 (29mm) - 24mm Centering Rings. 2 Pack
1.1" (29mm) - 24mm centering ring holds 24mm motor tube inside 29mm airframe. Kraft Paper. Fits into any 29mm airframe. Works best with Estes...
1.6 - 1.1 Centering Ring
1.6" - 1.1" (ID 38 mm - 29 mm) centering ring holds 29mm motor tube inside 38mm airframe. 1/4" plywood. Fits into any 38mm airframe. Works best with...
1.6 - 1.1 (P) Centering Ring
1.6" - 1.1" (ID 38 mm - 29 mm) centering ring holds 29mm motor tube inside 38mm airframe. 1/4" plywood. Fits into any 38mm airframe. Works best with...
1.6 - 1.1 (S) Centering Ring
1.6" - 1.1" (ID 38 mm - 29 mm) centering ring holds 29mm motor tube inside 38mm airframe. 1/4" plywood. Fits into any 38mm airframe. Works best with...
1.9 - 1.1 Centering Ring
1.9" - 1.1" (29 mm) centering ring holds 29mm motor tube inside 1.9" Aerotech airframe. 1/4" plywood. Designed to center Rocketarium, Aerotech, LOC...
2.2 - 1.1 Centering Ring
2.2" - 1.1" (ID 54 mm - 29 mm) centering ring holds 29mm motor tube inside 54mm airframe. 1/4" plywood. Fits into any 54mm airframe. Works best with...
2.2 - 1.1 (P) Centering Ring
2.2" - 1.1" (ID 54 mm - 29 mm) centering ring holds 29mm motor tube inside 54mm airframe. 1/4" plywood. Fits into any 54mm airframe. Works best with...
2.1 (P) - 1.1 (P) Centering Ring
2.1" - 1.1" (54 mm - 29 mm). 1/4" plywood. Fits into PML 2.1" Phenolic and holds PML 1.1" (29 mm) Phenolic Tube. - 1.28", - 2.142", 1/4"", ...