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Description
REDBACK | Silicone Hose 3-1/2" In 4" Out Straight Reducer | HSR090100BRedback Silicone Hose Straight Reducer Solution for your Universal Application This Redback Straight Reducer Silicone Hose (HSR090100B) in Black provides a high performance transition between 3 1 2" (89mm) and 4" (101mm) piping. Engineered for high pressure and high temperature environments, it is the ideal choice for automotive, marine, and industrial custom plumbing. Key Features: High Quality Silicone Construction 4 Ply Reinforced Material (4mm
Redback Silicone Hose Straight Reducer Solution for your Universal Application
This Redback Straight Reducer Silicone Hose (HSR090100B) in Black provides a high-performance transition between 3-1/2" (89mm) and 4" (101mm) piping. Engineered for high-pressure and high-temperature environments, it is the ideal choice for automotive, marine, and industrial custom plumbing.
Key Features:
- High-Quality Silicone Construction
- 4-Ply Reinforced Material (4mm Wall Thickness)
- Operating Temperature Range: -65°C to 180°C
- Pressure Rating: 43 to 85 psi
- Superior UV, Ozone, and Chemical Resistance
Redback Silicone Hoses outperform standard rubber by offering:
- Enhanced flexibility and durability in harsh engine bays
- Smooth internal transition for optimized airflow or coolant flow
- Robust 4-ply reinforcement to prevent hose expansion under boost
- Professional Black finish for a clean engine aesthetic
Please Note: This hose is NOT recommended for use with oil or fuel. Always use high-quality T-bolt or worm-drive clamps to ensure a secure, leak-free connection.
Specifications:
- Type: Straight Reducer
- Inside Diameter (In): 89mm (3 1/2")
- Inside Diameter (Out): 101mm (4")
- Thickness: 4mm (4-Ply)
- Colour: Black
- Temperature Range: -65°C to 180°C
- Pressure Rating: 43 to 85 psi
Important Information
- The image shown may not reflect the actual product
- Shipping times may vary depending on destination and stock availability
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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 20 reviews
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Product Reviews
★★★★★ 4
Solid mineral SPF with light coverage effect
Style: SPF 50, Size: 3 Fl Oz (Pack of 1)
I’m used to La Roche-Posay’s chemical sunscreens, so this was my first time trying their mineral version. The texture is actually quite nice for a mineral formula. It spreads evenly and doesn’t feel gritty or chalky. That said, it does take a bit longer to fully absorb compared to chemical SPFs.
I’m already very pale, and I still notice a slight white cast. It’s not extreme, but it’s there. To be fair, most mineral sunscreens tend to do this, especially those using zinc oxide and titanium dioxide.
Interestingly, on my skin it almost behaves like a very light tinted sunscreen. It slightly blurs and softens the appearance of minor blemishes and redness, which I appreciate on minimal-makeup days.
It provides broad-spectrum SPF 50 protection and feels gentle on sensitive skin. I haven’t experienced irritation, pilling, or breakouts. It layers reasonably well over moisturizer but benefits from being applied in thin, well-blended layers, which adds some time to my morning routine so it's a little inconvenient.
Overall, it’s a solid mineral option with good protection. Just expect a bit more blending time and a subtle cast.
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Reviewed in the United States on February 24, 2026
★★★★★ 5
Great for pregnancy (or regular use)
Style: SPF 50, Size: 4.05 Fl Oz (Pack of 1)
I searched far and wide for a safe mineral-based sunscreen for pregnancy. I settled on this one and I was not disappointed. It saved my skin from a lot of sunburn this summer!
As other reviewers mentioned, it is harder to rub into the skin and can leave a whiteish tint, but that’s a small price to pay for a pregnancy-safe option.
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Reviewed in the United States on September 22, 2025
★★★★★ 1
Terrible, look like a ghost
Style: SPF 50, Size: 3 Fl Oz (Pack of 1)
I love La Roche-Posay but unfortunately, I finally came across the first product I truly hate from them. This product is a complete white mask on your face and does not settle in at all. You’ll be walking around looking like a ghost all day and it gave me a mild irritation to my eyes.
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Reviewed in the United States on May 29, 2026
★★★★★ 3
Leaves white cast, works okay under makeup.
Style: SPF 50, Size: 3 Fl Oz (Pack of 1)
First time using this sunscreen. I have very sensitive skin and thought since my skin tolerates their cleansers and moisturizers surely it should tolerate the sunscreen. So far so good. It’s very calming on my skin (maybe because of the zinc), but it leaves a noticeable white cast especially if you have dark skin. I wear mine under makeup and have a separate sunscreen from another brand on days where I don’t want to wear makeup. The white cast actually acts as a blank base and helps my foundation to lay well. A tip I learned from makeup artists years ago. Sunscreens that leave a white cast cancels out your natural color and acts as a corrector, concealer and foundation to lay better and look more like skin. Think of it like painting on a blank canvas. The texture is not lotion like and is actually quite thick. make sure to moisturize well before apply this sunscreen. I’ll write an update if I notice any negative issues, but so far I’m content with it because of the purpose I'm using it for.
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Reviewed in the United States on October 23, 2023
★★★★★ 5
Safe for very sensitive skin
Style: SPF 50, Size: 3 Fl Oz (Pack of 1), Style: SPF 50, Size: 3 Fl Oz (Pack of 1)
It is an excellent choice, especially if you have sensitive skin or want to avoid chemical filters. Minerals such as zinc oxide and titanium dioxide act by forming a barrier that reflects UV rays instead of absorbing them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
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