GCi STRONGER BY DESIGN G-16 Bolt Pinch Clamps 6-Pack — Inside-Mount 6000-Series Aluminum, Shoulder Bolt Protects Rail

GCi STRONGER BY DESIGN G-16 bolt pinch clamps are a six-pack of 6000-series aluminum inside-mount fasteners made to secure tonneau covers without cutting or deforming the truck bed rail.

These clamps are engineered for inside-mounted tonneau covers and offer a non-invasive attachment option that protects aluminum rails. Each clamp features a shoulder bolt to stop the fastener from digging into the rail and a jaw sized for common inside-mount setups. Sold in a pack of six and manufactured in the USA, the G-16 is intended for many full-size trucks and mid-size platforms; however, verify the clamp dimensions against your tonneau cover or cargo rail before ordering.

How do I confirm the G-16 clamps will fit my tonneau cover?

Measure the clamp opening and the standoff distance required by your cover. The G-16 jaw opens from 1/4" to 5/8" and the clamp body depth (dimension B) is 1 1/2", so your rail and cover hardware must match those clearances.

• Jaw opening (A): 1/4"–5/8"
• Clamp body depth (B): 1 1/2"
• Shoulder bolt included to protect rail edges
• Measure your tonneau’s inside mount gap and rail thickness before purchase

Which trucks and applications are these G-16 pinch clamps compatible with?

The G-16 is aimed at many full-size pickups and older midsize models, but fitment depends on rail style and whether the vehicle uses a cargo rail. Use the vehicle guidance only as a starting point and cross-check dimensions for final confirmation.

• Common fits: Silverado/Sierra 1500, 2500, 3500; Ram 1500/2500/3500; Ford F-150; Chevy ’07 Silverado/Sierra with cargo rail
• Also used on Dodge Dakota, Jeep Gladiator, Mitsubishi Raider, Nissan Titan, Toyota Tundra
• Not universal — alternate GCi models recommended for other rails (see product notes)
• Works for inside-mount tonneau covers; not for drill-through cap mounts

What makes the G-16 clamps durable and truck-ready?

GCi builds the G-16 from 6000-series structural aluminum and assembles each clamp with a shoulder bolt to reduce rail damage. This materials choice balances strength and corrosion resistance while keeping weight low.

• 6000-series structural aluminum construction for strength and longevity
• Shoulder bolt design prevents the fastener from cutting into the aluminum rail
• Made in the USA for consistent build quality
• Sold as a six-pack to handle multi-point tonneau installations

Are there other GCi clamp options if my setup differs?

GCi offers several alternative clamps for different jaw openings, cargo rail styles, and drill-through caps. Choosing the juiste model ensures a secure, non-destructive mount for your specific truck and tonneau brand.

• For larger jaw opening (1/2"–3/4") search ASIN: B09RTLGVL7
• G-1 model for truck caps/camper shells with drill-through mounting (ASIN: B01LF2ZYXE)
• G-30, G-991, G-120, and G-7 exist for various cargo rails and truck models
• Check GCi model numbers against your vehicle and cover design before buying

Who is this for? Installers and truck owners who want a non-invasive, strong mounting method for inside-mount tonneau covers will appreciate the G-16 clamps. If you need a pack sized for a complete installation on a full-size pickup with compatible rails, these six durable aluminum clamps provide a solid option. If your rail or tonneau requires a different jaw width or a drill-through cap solution, review GCi’s other clamp models to find the correct match.