---
product_id: 49451492
title: "TECHKO Silverhook BIG31 Big Boy Plastic Flexi Filler 250ml"
brand: "silverhook"
price: "B/.61"
currency: PAB
in_stock: true
reviews_count: 13
category: "Silverhook"
url: https://www.desertcart.com.pa/products/49451492-techko-silverhook-big31-big-boy-plastic-flexi-filler-250ml
store_origin: PA
region: Panama
---

# Corrosion & Water Resistant Grips to wide range of surfaces High Elasticity for durable repairs TECHKO Silverhook BIG31 Big Boy Plastic Flexi Filler 250ml

**Brand:** silverhook
**Price:** B/.61
**Availability:** ✅ In Stock

## Summary

> 🛠️ Fix it like a pro, flex it like a boss!

## Quick Answers

- **What is this?** TECHKO Silverhook BIG31 Big Boy Plastic Flexi Filler 250ml by silverhook
- **How much does it cost?** B/.61 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/49451492-techko-silverhook-big31-big-boy-plastic-flexi-filler-250ml)

## Best For

- silverhook enthusiasts

## Why This Product

- Trusted silverhook brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Universal Surface Grip:** Adheres seamlessly to plastics, metals, and composites for versatile fixes.
- • **Water & Corrosion Shield:** Protect your repairs from the elements with built-in resistance.
- • **Fast Curing, Ready to Shape:** Sets quickly so you can sand and finish your project without delay.
- • **Professional Finish Every Time:** Smooth sanding and easy priming ensure your repair looks showroom-ready.
- • **Flexible Strength for Lasting Repairs:** Big Boy Flexi Filler bends, not breaks—perfect for car bumpers and more.

## Overview

Silverhook BIG31 Big Boy Plastic Flexi Filler is a 250ml high-elasticity automotive filler designed for durable repairs on car bumpers and various surfaces. It offers corrosion and water resistance, quick curing time, and excellent sanding properties, making it a top choice for professional-quality vehicle body repairs.

## Description

Silverhook BIG31 Big Boy Plastic Flexi Filler 250ml : desertcart.co.uk: Automotive

Review: Quick and easy to apply and sand to shape - Arrived promptly. Used to repair a large hole ripped in the front bumper (see photos). Applied using mesh and built up in layers. Cured in about an hour with warm air from fan heater. Sanded easily into shape using sanding block with a variety of paper grades starting coarse to get the correct form, and then a light grade before applying two coats of primer and the top coat (still needs a t-cut and lacquer but I am very pleased with the result).
Review: Fantastic stuff! - This filler is great, spent ages looking around the net for just the right thing as I want this repair to last especially with the cost of the paint etc. Repaired my front bumper which had a large crack across the top and a hole punched below it I'm guessing from a reversing towbar. Used the big boy fibreglass kit from here to shore up the inside then just sanded the outer face for a good key with the filler and dremelled a groove along the crack just to give a little more area to grip on to. Just go through in your head what you're going to do so that you're sure everything is prepared before mixing as my first little bit hardened just as I was about to put a last little bit over the crack area where it had sunk in to the gap. It set in 4-5 mins or so but I was faffing around in the beginning so I had to mix another little bit to finish the crack and also fill the hole. Excellent stuff though sands down beautifully.

## Features

- Causes damage to organs through prolonged or repeated exposure.
- Causes serious eye irritation.
- Causes skin irritation.
- Flammable liquid and vapour.
- Suspected of damaging fertility or the unborn child.
- Big Boy Flexible Plastic for Car Bumpers etc.
- Grips to Wide Range of Surfaces
- Corrosion & Water Resistant
- High Elasticity

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B007NVYCNU |
| Best Sellers Rank | 1,939 in Automotive ( See Top 100 in Automotive ) 29 in Fillers, Adhesives & Sealants |
| Brand | SILVERHOOK |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,118) |
| Date First Available | 30 April 2012 |
| Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Item Weight | 280 g |
| Item model number | BIG31 |
| Manufacturer | Ware Motorama Ltd T/A Silverhook |
| Manufacturer part number | BIG31 |
| Model | BIG31 |
| Package Dimensions | 10.5 x 10.5 x 8.6 cm; 279.99 g |

## Product Details

- **Brand:** SILVERHOOK
- **Colour:** Grey
- **Compatible devices:** Car
- **Connector type:** Component
- **Specific uses for product:** Repair and fill gaps or holes on different surfaces

## Images

![TECHKO Silverhook BIG31 Big Boy Plastic Flexi Filler 250ml - Image 1](https://m.media-amazon.com/images/I/81qBQ8H59qL.jpg)

## Questions & Answers

**Q: My drivers side door is a bit bent in and rusty at the edge. If I tap it out level will this be any use to cover the rust and any gaps?**
A: If you go to the trouble of "Tap it out level" you should also want to remove or deal with the rust, before you try to level the contours of the door skin with a filer. Whilst I assume your car's door is not plastic but metal, I would expect you could use this filer but it should be noted it's prepared for filling / bonding to plastic items, therefore it should be recommended that you use a filer designed for use with metal!

I hope this info. is useful to you, and I wish you the best of luck / success with this project, and remember to treat / paint the door skin to preserve its future life / service!

Regards,

David Head.

**Q: Has anyone used this on upvc window frames**
A: I used it on some motorbike plastics and it’s done the job. Can’t hurt to give it a try.

**Q: I have some deep gouges/scratches to fill on a dk grey bumper which I intended to treat afterwards with the forever black product..will that work ??**
A: i used this product to fill a large dent in my back bumper, it seems the previous owner to my van had reversed into a post.it filled the gap very well and after hardening it was very easy to rub down with sandpaper.i then used black bumper paint spray and gave it 3 coats and it came up really well.if you have a dark grey bumper you might like to purchase a bumper paint spray the same colour.hope this helps.

**Q: Will it be OK to fill dip in caravan roof, where water collects**
A: Id be guessing,but I think it probably would. I dont know if it would be water poof or not should there be  joint in the roof covering at the area of the dip.
Good luk

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quick and easy to apply and sand to shape
*by T***R on 28 December 2024*

Arrived promptly. Used to repair a large hole ripped in the front bumper (see photos). Applied using mesh and built up in layers. Cured in about an hour with warm air from fan heater. Sanded easily into shape using sanding block with a variety of paper grades starting coarse to get the correct form, and then a light grade before applying two coats of primer and the top coat (still needs a t-cut and lacquer but I am very pleased with the result).

### ⭐⭐⭐⭐⭐ Fantastic stuff!
*by A***N on 21 September 2018*

This filler is great, spent ages looking around the net for just the right thing as I want this repair to last especially with the cost of the paint etc. Repaired my front bumper which had a large crack across the top and a hole punched below it I'm guessing from a reversing towbar. Used the big boy fibreglass kit from here to shore up the inside then just sanded the outer face for a good key with the filler and dremelled a groove along the crack just to give a little more area to grip on to. Just go through in your head what you're going to do so that you're sure everything is prepared before mixing as my first little bit hardened just as I was about to put a last little bit over the crack area where it had sunk in to the gap. It set in 4-5 mins or so but I was faffing around in the beginning so I had to mix another little bit to finish the crack and also fill the hole. Excellent stuff though sands down beautifully.

### ⭐⭐⭐⭐ Is it easy to use
*by A***S on 6 June 2025*

Works great easy to use good quality and good finish recommend

## Frequently Bought Together

- Silverhook BIG31 Big Boy Plastic Flexi Filler 250ml
- Silverhook BIGK1 Big Boy Glass Fibre Resin Repair Kit
- Silverhook BIG11 Body Filler , 250-Millilitre, gray

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-03-07*