Partner Brand

Grade-Max / Skid-Max

Skid-Max box blade graders for skid steers, built by Seal Bilt LLC. Three generations of the Seal family have built these graders since the late 1970s, and J.C. Seal held the first patent on them in 1985. Prices on the 2026 lineup are below.

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Authorized dealer through
Equipment & Building Connections LLC

Prices from the 2026 Skid-Max price sheet (Seal Bilt LLC). Specs from the price sheet and grademax.net. Fixed, manual adjustable and 3X graders show a complete price. Hydraulic adjustable graders are call for price. 11 lines, 36 models listed below, grouped by category. Sales tax applies unless a tax exemption applies.

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Full catalog

Grade-Max / Skid-Max lineup

3X Series 1 item

3X Series

Shown: Skid-Max 3X (84 in)

Skid-Max 3X Grader

Starting at $3,200

Complete price. No hydraulic hookup needed. Shipping available.

3 blade fixed straight grader and spreader with triangle sides. For spreading, leveling, landscaping, house pads, parking areas and road building. Side pans contain material; bucket stops included.

3 blades, fixed straight
Caterpillar cutting edges
Bucket stops included
6, 7 and 8 ft widths

3 models and sizes with prices

Model	Details	Price
3X 6 ft	3X-6 / approx 790 lb	$3,200
3X 7 ft	3X-7 / approx 875 lb	$3,370
3X 8 ft	3X-8 / approx 990 lb	$3,650

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PRO Series, 2 Blade 3 items

Grade-Max / Skid-Max Skid-Max PRO 2FX (Fixed)

PRO Series, 2 Blade

Shown: Skid-Max SMP-2FA (2 blade, fixed angled)

Skid-Max PRO 2FX (Fixed)

Starting at $2,950

Complete price. No hydraulic hookup needed. Shipping available.

2 blade PRO Series grader for road grading and crowning. Fixed blades (straight or angled).

2 blades, fixed
Caterpillar cutting edges
Bucket stops included

3 models and sizes with prices

Model	Details	Price
2FX-SMP 6 ft	2FX-SMP-6 / min 43 HP	$2,950
2FX-SMP 7 ft	2FX-SMP-7 / min 50 HP	$3,075
2FX-SMP 8 ft	2FX-SMP-8 / min 65 HP	$3,450

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Skid-Max PRO 2MA (Manual Adjustable)PRO Series, 2 Blade

Skid-Max PRO 2MA (Manual Adjustable)

Starting at $3,500

Complete price. No hydraulic hookup needed. Shipping available.

2 blade PRO Series grader for road grading and crowning. Remove two bolts and slide to the angle you want. Spud wrench package included. About 10 in wider than the listed size when fully angled.

2 blades, manual adjustable
Caterpillar cutting edges
Bucket stops included
1.5 in reversible, replaceable skid shoes

3 models and sizes with prices

Model	Details	Price
2MA-SMP 6 ft	2MA-SMP-6 / min 43 HP	$3,500
2MA-SMP 7 ft	2MA-SMP-7 / min 50 HP	$3,700
2MA-SMP 8 ft	2MA-SMP-8 / min 65 HP	$3,800

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Skid-Max PRO 2HA (Hydraulic Adjustable)PRO Series, 2 Blade

Skid-Max PRO 2HA (Hydraulic Adjustable)

Call for price (320) 226-5397

Angles with your skid steer's auxiliary hydraulics. Call to confirm hoses and couplers for your machine.

2 blade PRO Series grader for road grading and crowning. Angle adjusted from the operator seat with the skid steer hydraulics. About 13 in wider than the listed size when fully angled.

2 blades, hydraulic adjustable
Caterpillar cutting edges
Bucket stops included
1.5 in reversible, replaceable skid shoes

3 models and sizes

Model	Details
2HA-SMP 6 ft	2HA-SMP-6 / min 45 HP
2HA-SMP 7 ft	2HA-SMP-7 / min 55 HP
2HA-SMP 8 ft	2HA-SMP-8 / min 70 HP

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PRO Series, 3 Blade 3 items

Skid-Max PRO 3FX (Fixed)PRO Series, 3 Blade

Skid-Max PRO 3FX (Fixed)

Starting at $3,450

Complete price. No hydraulic hookup needed. Shipping available.

3 blade PRO Series grader for road grading and crowning. Fixed blades, angled.

3 blades, fixed
Caterpillar cutting edges
Bucket stops included
Teeth sold separately

3 models and sizes with prices

Model	Details	Price
3FX-SMP 6 ft	3FX-SMP-6 / min 45 HP	$3,450
3FX-SMP 7 ft	3FX-SMP-7 / min 60 HP	$3,650
3FX-SMP 8 ft	3FX-SMP-8 / min 75 HP	$3,990

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Grade-Max / Skid-Max Skid-Max PRO 3MA (Manual Adjustable)

PRO Series, 3 Blade

Shown: 84-3MA with optional teeth

Skid-Max PRO 3MA (Manual Adjustable)

Starting at $3,950

Complete price. No hydraulic hookup needed. Shipping available.

3 blade PRO Series grader for road grading and crowning. Remove two bolts and slide to the angle you want. Spud wrench package included. About 10 in wider than the listed size when fully angled.

3 blades, manual adjustable
Caterpillar cutting edges
Bucket stops included
1.5 in reversible, replaceable skid shoes

3 models and sizes with prices

Model	Details	Price
3MA-SMP 6 ft	3MA-SMP-6 / min 48 HP	$3,950
3MA-SMP 7 ft	3MA-SMP-7 / min 65 HP	$4,140
3MA-SMP 8 ft	3MA-SMP-8 / min 78 HP	$4,500

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Grade-Max / Skid-Max Skid-Max PRO 3HA (Hydraulic Adjustable)

PRO Series, 3 Blade

Shown: 84-3HA with optional teeth

Skid-Max PRO 3HA (Hydraulic Adjustable)

Call for price (320) 226-5397

Angles with your skid steer's auxiliary hydraulics. Call to confirm hoses and couplers for your machine.

3 blade PRO Series grader for road grading and crowning. Angle adjusted from the operator seat with the skid steer hydraulics. About 13 in wider than the listed size when fully angled.

3 blades, hydraulic adjustable
Caterpillar cutting edges
Bucket stops included
1.5 in reversible, replaceable skid shoes
Teeth sold separately

3 models and sizes

Model	Details
3HA-SMP 6 ft	3HA-SMP-6 / min 60 HP
3HA-SMP 7 ft	3HA-SMP-7 / min 75 HP
3HA-SMP 8 ft	3HA-SMP-8 / min 95 HP

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PRO Series, 4 Blade 3 items

Skid-Max PRO 4FX (Fixed)PRO Series, 4 Blade

Skid-Max PRO 4FX (Fixed)

Starting at $3,600

Complete price. No hydraulic hookup needed. Shipping available.

4 blade PRO Series grader for road grading and crowning. Fixed blades (straight or angled).

4 blades, fixed
Caterpillar cutting edges
Bucket stops included

3 models and sizes with prices

Model	Details	Price
4FX-SMP 6 ft	4FX-SMP-6 / min 60 HP	$3,600
4FX-SMP 7 ft	4FX-SMP-7 / min 78 HP	$3,950
4FX-SMP 8 ft	4FX-SMP-8 / min 90 HP	$4,175

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Skid-Max PRO 4MA (Manual Adjustable)PRO Series, 4 Blade

Skid-Max PRO 4MA (Manual Adjustable)

Starting at $4,175

Complete price. No hydraulic hookup needed. Shipping available.

4 blade PRO Series grader for road grading and crowning. Remove two bolts and slide to the angle you want. Spud wrench package included. About 10 in wider than the listed size when fully angled.

4 blades, manual adjustable
Caterpillar cutting edges
Bucket stops included
1.5 in reversible, replaceable skid shoes

3 models and sizes with prices

Model	Details	Price
4MA-SMP 6 ft	4MA-SMP-6 / min 65 HP	$4,175
4MA-SMP 7 ft	4MA-SMP-7 / min 78 HP	$4,290
4MA-SMP 8 ft	4MA-SMP-8 / min 90 HP	$4,590

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Skid-Max PRO 4HA (Hydraulic Adjustable)PRO Series, 4 Blade

Skid-Max PRO 4HA (Hydraulic Adjustable)

Call for price (320) 226-5397

Angles with your skid steer's auxiliary hydraulics. Call to confirm hoses and couplers for your machine.

4 blade PRO Series grader for road grading and crowning. Angle adjusted from the operator seat with the skid steer hydraulics. About 13 in wider than the listed size when fully angled.

4 blades, hydraulic adjustable
Caterpillar cutting edges
Bucket stops included
1.5 in reversible, replaceable skid shoes

3 models and sizes

Model	Details
4HA-SMP 6 ft	4HA-SMP-6 / min 70 HP
4HA-SMP 7 ft	4HA-SMP-7 / min 80 HP
4HA-SMP 8 ft	4HA-SMP-8 / min 100 HP

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Options 1 item

Skid-Max Options and Add-onsOptions

Skid-Max Options and Add-ons

Add-on prices below. Ordered with a grader.

Factory add-ons for Skid-Max graders. The 3 point hitch add-on lets the grader work on both a skid steer and a tractor.

6 add-ons with prices

Model	Details	Price
Serrated Blade (option)		$270
Laser Mast with storage (option)		$300
Teeth (each) (option)		$95
Auto-crowN (self tilts) (option)		$500
3 Point Hitch Add-On, Fixed Top Hitch (option)	use on skid steer and tractor	$750
3 Point Hitch Add-On, Hydraulic Adjustable Top Hitch (option)	tractor operator adjusts the hitch hydraulically	$990

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Grading & Leveling

Products we carry from Grade-Max / Skid-Max

The 2026 price sheet covers two series. The SKID-MAX 3X Series is a 3 blade fixed grader and spreader with triangle sides, for spreading, leveling, landscaping, house pads, parking areas and road building. The SKID-MAX PRO Series comes with 2, 3 or 4 blades in fixed, manual adjustable or hydraulic adjustable versions, designed for road grading and crowning. Every model comes in 6, 7 and 8 ft widths.

All Skid-Max graders use Caterpillar cutting edges and include bucket stops. Manual adjustable models change angle by removing two bolts and sliding the blades; hydraulic adjustable models angle from the operator seat. Adjustable models have 1.5 in reversible, replaceable skid shoes. A 3 point hitch add-on lets a grader work on both a skid steer and a tractor.

For stock, delivery and hydraulic adjustable pricing, call us at (320) 226-5397 or request a quote online.

Skid-Max photos