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Description
Ronstan RF55111 Series 55 Orbit Single Block with BecketRonstan RF55111 Orbit Block with becket. Designed for applications where weight is of paramount importance. The securing loop is easily changed and we suggest that you use either a forged eye or shackle to secure the block as pressed steel fittings can be sharp and will prematurely wear the rope mounting. General Range Information: Ultra Lightweight Low friction 2 stage Orbital ball bearing system Highest working load in its class Easily fitted and
Ronstan RF55111 Orbit Block with becket. Designed for applications where weight is of paramount importance. The securing loop is easily changed and we suggest that you use either a forged eye or shackle to secure the block as pressed steel fittings can be sharp and will prematurely wear the rope mounting.
General Range Information:
- Ultra Lightweight
- Low friction 2-stage Orbital ball bearing system
- Highest working load in its class
- Easily fitted and securely retained Dyneema Link head
- Low profile and compact
- High performance cleating
- Sheave Diameter 55mm
Technical:
- Sheave Diameter 55mm
- Maximum Rope Diameter 10mm
- Maximum Working Load 500kg
- Breaking Load 1000kg
- Weight 75g
Materials:
- Ball bearings - High compression strength carbon black Acetal
- Stage 2 bearing - Carbon fibre reinforced, PTFE impregnated Nylon
- Frame/Cheeks - Toughened, glass fibre reinforced Nylon
- Rope Link: UV stabilised, multi-strand impregmented SK75 Dyneema
Applications:
- Mainsheet systems on dinghies, sportsboats and small keelboats to 9m (30ft)
- Spinnaker sheets on dinghies, sportsboats and small keel boats to 9m (30ft)
- Halyard, Vang and Backstay application on boats to 8m (26ft)
- Control line applications on larger yachts
| We recommend using the RF613S shackle to securely attach the block to the existing deck eye on your boat. This helps the block maintain maximum freedom of movement and reduces the risk of wear on the Dyneema loop due to sharp edges on the deck eye, then use the 8072 Rubber Boot to keep the block upright and provide a neat finish. See related items. |
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
4.7 ★★★★★
Based on 1295 reviews
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Product Reviews
★★★★★ 5
Amazing Spark plugs
Smooth starting came after I fitted these Bosch 9614 double iridium plugs into my 2014 Honda Accord Sport, along with slightly better idling behavior. Longevity might come from those fine iridium tips; installing them felt straightforward enough. Yet here's the catch - the 9614 doesn't match what the factory actually specifies for the 2.4L engine in that year’s Accord. Most often, it's the 9694 or some other OEM-recommended plug you’d want instead
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Reviewed in the United States on December 30, 2025
★★★★★ 5
Great plug
Not sure about gas mileage, but these definitely improved the performance of my little 1.8 L Honda Civic, not sure if it’s because the old Plex were just old and weak or just because these are that much better. Acceleration is much better and engine or idle is much smoother
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Reviewed in the United States on September 28, 2025
★★★★★ 5
Very affordable compare to the Honda OE
Prefect fit and very affordable for the brand.
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Reviewed in the United States on March 22, 2026
★★★★★ 5
very good spark plugs for me.
i bought a 4 pack of BOSCH 9614 OE Fine Wire Double Iridium Spark Plug - Pack of 4 from Amazon prime i am just a regular dude i don't get reward or get free stuffs or free spark plugs, from this review...had my cousin install these BOSCH 9614 OE Fine Wire Double Iridium Spark Plug - Pack of 4...drove it right away i can tell a big difference seems a little more power and it purrs so smooth lols..and it sparks up right away for the engine to start smoothly i can tell a difference for sure. i recommend this for hondas dunno about the rest but i have some regular bosch spark plugs in my toyota too the cheapest one Bosch Platinum Spark Plug 6702, though but still good...just wanted to try the better expensive spark plugs and can tell a difference.. so yea i do recommend these for ur hondas..peace out.
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Reviewed in the United States on October 19, 2024
★★★★★ 5
Bosch is a good product in any form
I had used these plugs before in my 03 Honda Element and they performed well for 5 years or more so I considered these for use in my now 07 Honda CRV.
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Reviewed in the United States on January 13, 2026