Will it fit my Bosch table saw?

It fits Bosch 4100 and 4000 series saws only. Check your model plate before buying; other Bosch and competitor saws use different rails.

How much wider does it make the table?

It adds 12 inches on the left side, taking the table width to 52 inches. That extra width helps when ripping long boards and sheet goods.

What tools do I need to install it?

A 5mm hex wrench and hand pliers. Mounting hardware is not always in the box, so check before you start.

Does it support heavy sheets on its own?

Not fully. The aluminum extension has no legs, so the outer edge can flex under heavy panels. Add a roller stand for large sheets.

Is it worth it over a roller stand?

If you own a 4100 or 4000 series saw and want permanent left-side support, yes. A roller stand is more flexible for outfeed and works with any saw.

Bosch TS1003 Table Saw Left Side Support Extension

Last price we saw

$277.99at Amazon, last seen Oct 31

Prices change often: ask the agent below to check today's price at every store.

Prices are checked against each store and labelled with when.

Ask our shopping agent

Our take on the Bosch TS1003 Table Saw Left Side Support Extension

The Bosch TS1003 is a 12-inch left-side support extension for Bosch 4100 and 4000 series table saws. It bolts to the left rail and widens the table to 52 inches, giving long stock and sheet goods more support. It is aluminum, weighs 4.4 pounds, and carries a 1-year warranty. It is a fitment part, so its value depends on whether you own a compatible saw.

Best forOwners of a Bosch 4100 or 4000 series sawCutting long boards and full sheetsSmall shops that need more rip capacitySaw owners who want a bolt-on fix, not a new saw

Pros

Adds 12 inches of left-side support
Extends table width to 52 inches
Light aluminum at 4.4 pounds
Installs with a 5mm hex wrench and pliers
Backed by a 1-year warranty

Cons

Fits only Bosch 4100 and 4000 series saws

Bosch TS1003 Table Saw Left Side Support Extension prices at every store

AmazonCheck price at Amazon

Bosch TS1003 Table Saw Left Side Support Extension price history

Lowest price we've seen: $277.99 on Oct 31 at Amazon. Tracked across 1 store since Oct 31.

What reviewers say

Owners of the 4100 and 4000 series generally report a solid fit and a real gain in rip capacity. Complaints center on missing hardware and on the unsupported outer edge sagging under heavy panels.

Pros

Fits the 4100 and 4000 series as described
Noticeably more support for long rips
Light and easy to install

Cons

Mounting hardware sometimes missing from the box
Outer edge flexes without extra support
Fitment confusion among buyers of other Bosch models

Specifications

Dimensions: 24.00 x 4.00 x 4.00 InchesSource

Questions and answers

Will it fit my Bosch table saw?: It fits Bosch 4100 and 4000 series saws only. Check your model plate before buying; other Bosch and competitor saws use different rails.
How much wider does it make the table?: It adds 12 inches on the left side, taking the table width to 52 inches. That extra width helps when ripping long boards and sheet goods.
What tools do I need to install it?: A 5mm hex wrench and hand pliers. Mounting hardware is not always in the box, so check before you start.
Does it support heavy sheets on its own?: Not fully. The aluminum extension has no legs, so the outer edge can flex under heavy panels. Add a roller stand for large sheets.
Is it worth it over a roller stand?: If you own a 4100 or 4000 series saw and want permanent left-side support, yes. A roller stand is more flexible for outfeed and works with any saw.