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Ships within 48 hours · Estimated delivery Aug 25 - Aug 30
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Description
Ronstan Two-speed Mainsheet System Bottom Block OnlyProduct Description Ronstan Two speed Mainsheet System Bottom Block Only Product Information Two speed mainsheet systems allow both coarse and fine tuning in a single purchase system. The system allows fine tuning of the mainsheet when sailing upwind by using one of the sheet tails and keeping the other cleated. Using both the sheets at once allows the trimmer to blow off the main quickly when rounding the top mark and trim on quickly when hardening
Product Description
Ronstan Two-speed Mainsheet System Bottom Block Only
Product Information
Two-speed mainsheet systems allow both coarse and fine tuning in a single purchase system. The system allows fine tuning of the mainsheet when sailing upwind by using one of the sheet tails and keeping the other cleated. Using both the sheets at once allows the trimmer to blow off the main quickly when rounding the top mark and trim on quickly when hardening up after rounding the bottom mark. When fitting to traveller cars, ensure adequate support for the bottom block and use appropriate stand-up spring kit. (Refer to traveller section for more information).
Features
- Coarse and and fine tuning purchase system
- Unrivalled 18:1 holding power
- Dual sided On-Off switch
- Low friction ball bearing system
- Lightweight
- Cheek cut-outs for easy bearing maintenance
Specifications
- Sheave Ø - 3 + 2 in.
- Max. Rope Ø - 3/8 in.
- M.W.L. - 2430 lb.
- B.L. - 5070 lb.
- Weight - 36.5 oz.
Applications
- Two-Speed systems: Mainsheets on sportsboats and keel boats to 12m (40ft)
- Mainsheets on sportsboats and keelboats to 12m (40')
- Max. mainsail area, END boom sheeting = 42sq m (452 sq ft)
- Max. mainsail area, MID boom sheeting = 27sq m (290 sq ft)
Materials
- Carbon Black Acetal ball bearings
- U.V. stabilised Acetal sheaves, alloy ratchet sheaves
- Cheek plates: Anodised aluminium
- Torlon® ratchet pawl
- Adjustable cleat arms
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 5
Nice backpack
Color: Aa-black, Size: 14 Inch
Good quality backpack. Use it everyday for work and it’s very spacious.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 21, 2026
★★★★★ 5
Cute, functional bag that’s very stylish
Color: A-pinkish Grey, Size: 14 Inch
This little bag is so cute and fictional. It’s the perfect size and the color is gorgeous. Matches my style really well. It also is a smaller size that fits many things which is really hard to find. It’s always usually a bigger bag so I absolutely love this one and highly recommend it.
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Reviewed in the United States on October 10, 2025
★★★★★ 3
Its ok
Color: Black, Size: 16 Inch
I ended up returning it as it wasn't quite what I needed. I actually thought the bag abd design were ok. Its not worth the price is paid either.
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Reviewed in the United States on February 13, 2026
★★★★★ 5
Feels great to wear!
Size: XX-Large, Color: Light Khaki
Love the feel of the fabric. Gives you room to breath and isn't tight feeling. I got the XXL and it fits perfect. I like the fact that this shirt can be either formal or everyday wear. It just all depends on what pants or shorts you want to wear with it!
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Reviewed in the United States on March 27, 2026
★★★★★ 5
Great purchase for the price!
Size: Small, Color: Light Khaki
Very comfortable, color matched what was advertized, size fitted well. Overall a great purchase for the price.
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Reviewed in the United States on April 6, 2026