Is the Ronstan Series 75 Ultimate Ratchet - Single in stock?

The Ronstan Series 75 Ultimate Ratchet - Single is currently out of stock. You can place a special order to reserve the next available unit, or contact us for alternatives.

What brand makes the Ronstan Series 75 Ultimate Ratchet - Single?

The Ronstan Series 75 Ultimate Ratchet - Single is manufactured by Ronstan, a trusted brand in the Sailing industry. We carry the full line of genuine Ronstan parts and accessories.

Is the Ronstan Series 75 Ultimate Ratchet - Single a genuine new part?

Yes, the Ronstan Series 75 Ultimate Ratchet - Single is a brand new, genuine Ronstan part.

What is the part number for the Ronstan Series 75 Ultimate Ratchet - Single?

The manufacturer part number (MPN) for the Ronstan Series 75 Ultimate Ratchet - Single is RF72100 and the UPC code is 9316800305230. Use these numbers to verify compatibility with your application before ordering.

What are the dimensions and weight of the Ronstan Series 75 Ultimate Ratchet - Single?

The Ronstan Series 75 Ultimate Ratchet - Single weighs 0.6 and measures 7 x 4 x 2 (L x W x H). Please verify these specifications fit your application before ordering.

How is the Ronstan Series 75 Ultimate Ratchet - Single shipped?

The Ronstan Series 75 Ultimate Ratchet - Single ships from our warehouse via standard shipping methods. Shipping costs are calculated at checkout based on your location and the item's weight and dimensions.

Can I return the Ronstan Series 75 Ultimate Ratchet - Single if it doesn't work for me?

Yes, the Ronstan Series 75 Ultimate Ratchet - Single is returnable. Please review our return policy page for the return window and conditions. Items must be in original condition with packaging.

Does the Ronstan Series 75 Ultimate Ratchet - Single come with a warranty?

The Ronstan Series 75 Ultimate Ratchet - Single is covered by Ronstan's manufacturer warranty against defects in materials and workmanship. See our warranty page for full details and coverage terms.

What category does the Ronstan Series 75 Ultimate Ratchet - Single belong to?

The Ronstan Series 75 Ultimate Ratchet - Single belongs to the Blocks subcategory within Sailing. Browse our full selection of Blocks products for more options.

Sailing Blocks

Ronstan

Ronstan Series 75 Ultimate Ratchet - Single

Name: Ronstan Series 75 Ultimate Ratchet - Single
Brand: Ronstan
SKU: RF72100
Price: 252.83 USD
Availability: OutOfStock

Out of StockNewSKU: RF72100

$252.83$297.45per unit

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This item is currently out of stock.

Special order from Ronstan — Estimated 2–4 weeks.

Description

Series 75 Ultimate Ratchet - Single

The extruded hole design, in conjunction with the groove profile of the sheave, provides a more powerful grip than conventional designs - up to 20:1 holding power. Unrivaled low weight is achieved by the use of a Torlon® ratchet pawl, high grade machined alloy sheave and black Acetal hubs and bearings. On-Off switching knob is fitted to both sides of the swivel blocks (one can be removed if desired). Ratchet blocks can be disassembled for servicing or customization.

Features:

Unrivaled 20:1 holding power
Dual sided On-Off switch
Ability to operate On/Off switch under load
Low friction ball bearing system
Lightweight
Cheek cut-outs for easy bearing maintenance

Applications:

Mainsheet on powerful dinghies and skiffs
Series 60 mainsheet systems on sports boats using RF7 mainsheet swivel units
Control line applications on larger yachts
Spinnaker sheets on sports boats and small keel boats (lateral lead blocks)

Materials:

Carbon black Acetal ball bearings
Anodised aluminium sheave and cheek plates
Torlon® ratchet pawl
Grade 316 stainless steel forged shackle

Specifications:

Sheave Ø: 3"
Max. Rope Ø: 1/2"
Pin Ø: 9/32"
M.W.L.: 930lb
B. L.: 4400lb
Weight: 5.7oz

Accessories

No accessories listed for this product.

Specifications

SKU	RF72100
UPC	9316800305230
Brand	Ronstan
Category	Sailing
Country of Origin	—
Weight	0.6
Dimensions	7 x 4 x 2
Status	Active
Last Synced	10/8/2026, 2:05:34 AM

Compliance & Shipping

Returnable

Product Literature

No literature or manuals available for this product.

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Frequently Bought Together

Ronstan Series 75 Ultimate Ratchet - Single

$252.83

Ronstan Series 30 Ball Bearing Orbit Block - Triple - Becket

$57.81

Harken 57mm Carbo Air Block w/Swivel

$53.93

Barton Marine Ratchet Block - 55mm

$111.66

Total for 4 items:

$476.23

Compare Key Features

Feature	Ronstan Series 75 Ultimate Ratchet - Single CURRENT	Ronstan Series 30 Ball Bearing Orbit Block - Triple - Becket	Harken 57mm Carbo Air Block w/Swivel	Barton Marine Ratchet Block - 55mm	Harken 16mm Block
Price	$252.83	$57.81	$53.93	$111.66	$17.21
Brand	Ronstan	Ronstan	Harken	Barton Marine	Harken
Condition	New	New	New	New	New
Availability	Out of Stock	In Stock	In Stock	In Stock	In Stock
Weight	0.6	0.19	0.3	0.3	0.1
Dimensions	7 x 4 x 2	4 x 2 x 2	6 x 3 x 1	6 x 3 x 2	3 x 2 x 1
SKU	RF72100	RF35312	2600	90500	404
Country	—	INDONESIA	UNITED STATES	—	UNITED STATES
	View Item	View Item	View Item	View Item	View Item