High Power Model Rocketry

PK-77 HyperLOC 835 Fin Set

PK-77 HyperLOC 835 Fin Set - Main image
$13.42 $20.33 In stock

The PK-77 HyperLOC 835 Fin Set from LOC Precision includes three 1/4-inch fins designed for the HyperLOC 835 rocket. These fins are built to work with the 3.90-inch by 54mm motor mount tube and are compatible with the LOC-n ring set for this model.

  • Includes 3 fins for the HyperLOC 835
  • Fins are 1/4-inch thick for durability
  • Fits 54mm motor mount tubes
  • Compatible with 3.90” x 54mm LOC-n ring set
  • Brand: LOC Precision
Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (4.8 / 5 · 5 reviews)

Eli ★★★★★

The alignment holes matched my 3.90-inch mount tube perfectly, so installation took under an hour. These 1/4-inch fins feel rock-solid and I'm confident they'll handle the high-speed flights I've got planned for this build.

Steven E. ★★★★★

The 1/4-inch thickness gives these fins a reassuringly solid feel, and they seated flush against the motor mount tube with no gap. Pre-drilled holes saved me a chunk of build time, and the fit on my 3.90-inch airframe was spot on.

Olivia I. ★★★★★

The mounting holes lined up perfectly with my 3.90-inch motor mount tube—zero extra sanding needed. Cut through the air clean on my last flight, and the 1/4-inch thickness feels like it'll survive some rough landings.