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Professional Bump Assist Tool

$1899

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About this Item

Cleaner Reset: Helps bump-key practice feel more controlled.

Softer Strike: Adds useful cushioning at the key shoulder.

Easy Pairing: Works beside bump keys and a bump hammer.

Practice Aid: Good for rhythm, timing, and repeatability.

 

Description

Free US shipping over $49 30-day money-back guarantee 8,800+ store reviews Lock bumping gear
Bump key holder & dampener

Strike the Same Way Every Time

Bumping is a timing trick. A sharp tap on a bump key sends the driver pins jumping above the shear line for a split second, and in that window the plug turns. Get a clean, repeatable strike and it feels like magic. Snatch at it and you learn nothing. This is the Professional Bump Assist Tool: a rubber dampener with a moulded cap that grips your bump key, soaks up the bounce, and turns a wild swing into a controlled, repeatable hit you can actually read.

Gripsyour bump key
Soaksthe bounce
Repeatablestrike feel
Protectsthe cylinder face
Professional Bump Assist Tool, black rubber bump key dampener with a grey moulded cap, threaded hole and Dangerfield D logo, top view
A black rubber body for the bounce, a moulded cap that seats the key and takes the strike. Small tool, big difference to your timing.
What this is for

The part that turns a lucky hit into a method

Bump keys and a bump hammer give you the technique. This dampener gives you the consistency. The key drops into the moulded cap so it sits the same way every time, the dense rubber body absorbs and controls the rebound, and the cap takes the blow instead of the bare key head or the lock face. That means cleaner energy transfer into the pins, far less wild bounce, and a strike you can repeat until the feel of a good bump is locked into your hands.

Consistent grip

The bump key seats into the cap so it lines up the same way on every attempt. No re-fiddling the key between strikes.

Controlled bounce

The rubber body soaks up the rebound so the energy goes into the pins, not into a chaotic double-tap that defeats the bump.

Repeatable results

Same seat, same cushion, same strike. That repeatability is what lets you feel which attempts worked and why.

How a bump works

Four beats from key to open plug

Seat the key

Drop your bump key into the cap so the dampener rides on the bow. Then slide the key into the cylinder.

Set light tension

Apply a feather of rotational pressure on the key, the same gentle turn you would use to pick.

Strike clean

Tap the dampener with a bump hammer. The kinetic energy snaps the driver pins up past the shear line.

Turn the plug

For that split second the gap opens, your tension carries the plug round. Reset and repeat to drill the feel in.

See it in hand
Bump key seated in the rubber dampener with the cut blade exposed, ready to slide into a cylinder

The key seats, the rubber does the rest

Your bump key slots into the moulded cap and the dampener sits over the bow, leaving the cut blade free to enter the keyway. From there you bump as normal, but with a stable platform to strike instead of a bare key head that skips and rattles.

That little bit of control is the whole point. A bump that lands the same way twice teaches you something. A bump that lands differently every time just wears out the lock.

Build the bumping kit

A dampener wants a hammer and the right keys

This tool tunes the strike, but it needs the rest of the setup to work. Pair it with the Dangerfield Bump Hammer for a consistent, purpose-built tap, and a set like the 3pc Ultimate Bump Keys so you have the right profile for your practice cylinder. Learning on a see-through lock helps even more: the Clear Practice Padlock lets you watch the pins jump as you strike.

Add the hammerA bump hammer gives you a measured tap instead of a guessed swing.
Match the keysPick the bump-key profile that fits your practice cylinder before tuning the feel.
Watch it workA clear practice lock shows the driver pins jumping at the shear line.
On the cylinder
Bump key fitted with the rubber dampener inserted into a euro profile cylinder lock, ready to be struck

Cushioned contact, kinder to the lock

Because the moulded cap takes the hit, the strike lands through rubber rather than steel-on-steel against the cylinder face. That softer contact is gentler on the key bow and the lock front, so your practice cylinder and your bump keys both last longer.

It shines on pin tumbler euro and rim cylinders, the everyday locks most people learn bumping on. Set your tension, tap, and let the dampener keep each strike honest.

Details

What to know before buying

Brand Lokko
Tool type Bump key holder and strike dampener
What it does Grips the bump key, cushions and controls the strike, protects the cylinder face
Build Dense rubber body with a moulded cap that seats the key
Best use Repeatable bump-key practice on pin tumbler euro and rim cylinders
Pairs with A bump hammer and a bump-key set that matches your practice lock
Hand holding the rubber dampener on a bump key beside the grey Dangerfield bump hammer head
Made to work with a bump hammer. The dampener takes the tap so your strike stays controlled.
The real buying reason is repeatability. A bump key that seats the same way and a strike that lands the same way turn random luck into a skill you can build, while the cushioned cap spares the lock face and the key bow.
FAQ

Questions buyers usually ask

What does this tool actually do?

It is a holder and dampener for a bump key. The key seats into the moulded cap, the rubber body cushions and controls the strike, and the cap takes the blow so your hit stays repeatable and the lock face is protected.

Does it come with bump keys or a hammer?

This page is for the holder and dampener on its own. Pair it with a bump hammer for the tap and a bump-key set that suits your practice cylinder.

Is bumping approachable if I am new to it?

It is a great beginner technique. Start on a known practice lock with light tension, tap softly, and reset. A see-through lock like the Clear Practice Padlock lets you watch what each strike does.

Why bother with a dampener at all?

Striking a bare key bow tends to bounce and double-tap, which kills the bump and chews up the lock. The rubber body soaks that rebound so the energy reaches the pins cleanly and every strike feels the same.

What locks is it best on?

It shines on pin tumbler euro and rim cylinders, the everyday locks most people learn bumping on. Match your bump key to the cylinder and you are set.

Will it protect my practice lock?

The cushioned cap means the strike lands through rubber rather than steel on steel, so it is kinder to the cylinder face and the key bow over a long practice session.

Turn a lucky bump into a repeatable one

Seat the key, cushion the strike, and read what each tap does. Add the Professional Bump Assist Tool to your kit, pair it with a bump hammer and the right keys, and let a consistent hit teach you the timing.

Professional Bump Assist Tool, black rubber bump key dampener with a grey moulded cap, threaded hole and Dangerfield D logo, top view
Lokko

Professional Bump Assist Tool

$18.99

Summary

Cleaner Reset: Helps bump-key practice feel more controlled.

Softer Strike: Adds useful cushioning at the key shoulder.

Easy Pairing: Works beside bump keys and a bump hammer.

Practice Aid: Good for rhythm, timing, and repeatability.

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