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Description
Bikers Choice L87-17 Big Twin (Exc.08-Up FLH/FLT) L87-03 XL Rear Master Cyl Rbld Kit H-D 42382-87CRenew your brake performance with Biker's Choice direct OE replacement rear master cylinder rebuild kit. Kit includes the inner workings necessary to rebuild your rear master cylinde. This Part Fits: Year Make Model Submodel 2012 2016 Harley Davidson FLD Switchback Base 1994 2007 Harley Davidson FLHR Road King Base 2007 Harley Davidson FLHRC Road King Classic Base 1998 2006 Harley Davidson FLHRCI Road King Classic Base 1996 1997,2000 2006 Harley
Renew your brake performance with Biker's Choice direct OE replacement rear master cylinder rebuild kit. Kit includes the inner workings necessary to rebuild your rear master cylinde.This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2012-2016 | Harley-Davidson | FLD Switchback | Base |
| 1994-2007 | Harley-Davidson | FLHR Road King | Base |
| 2007 | Harley-Davidson | FLHRC Road King Classic | Base |
| 1998-2006 | Harley-Davidson | FLHRCI Road King Classic | Base |
| 1996-1997,2000-2006 | Harley-Davidson | FLHRI Road King | Base |
| 2004-2007 | Harley-Davidson | FLHRS Road King Custom | Base |
| 2002-2004,2007 | Harley-Davidson | FLHRSE3 Screamin Eagle Road King | Base |
| 2002 | Harley-Davidson | FLHRSEI Screamin Eagle Road King | Base |
| 2003 | Harley-Davidson | FLHRSEI2 Screamin Eagle Road King 2 | Base |
| 2004-2006 | Harley-Davidson | FLHRSI Road King Custom | Base |
| 1987-1993 | Harley-Davidson | FLHS Electra Glide Sport | Base |
| 1986-2007 | Harley-Davidson | FLHT Electra Glide Standard | Base |
| 1987-2005,2007 | Harley-Davidson | FLHTC Electra Glide Classic | Base |
| 1996-2006 | Harley-Davidson | FLHTCI Electra Glide Classic | Base |
| 2000-2004 | Harley-Davidson | FLHTCSE Screamin Eagle Electra Glide | Base |
| 2005 | Harley-Davidson | FLHTCSE2 Screamin Eagle Electra Glide 2 | Base |
| 1989-1997,2007 | Harley-Davidson | FLHTCU Electra Glide Ultra Classic | Base |
| 1995-2006 | Harley-Davidson | FLHTCUI Electra Glide Ultra Classic | Base |
| 2006 | Harley-Davidson | FLHTCUSE Screamin Eagle Ultra Classic Electra Glide | Base |
| 2007 | Harley-Davidson | FLHTCUSE2 Screamin Eagle Ultra Classic Electra Glide | Base |
| 2003-2006 | Harley-Davidson | FLHTI Electra Glide Standard | Base |
| 2006-2007 | Harley-Davidson | FLHX Street Glide | Base |
| 2006 | Harley-Davidson | FLHXI Street Glide | Base |
| 2012-2017 | Harley-Davidson | FLS Softail Slim | Base |
| 2016-2017 | Harley-Davidson | FLSS Softail Slim S | Base |
| 1987-1990,2006 | Harley-Davidson | FLST Heritage Softail | Base |
| 1988-2017 | Harley-Davidson | FLSTC Heritage Softail Classic | Base |
| 2001-2006 | Harley-Davidson | FLSTCI Heritage Softail Classic | Base |
| 1990-2017 | Harley-Davidson | FLSTF Fat Boy | Base |
| 2010-2017 | Harley-Davidson | FLSTFB Fat Boy Lo | Base |
| 2016-2017 | Harley-Davidson | FLSTFBS Fat Boy S | Base |
| 2001-2006 | Harley-Davidson | FLSTFI Fat Boy | Base |
| 2005-2006 | Harley-Davidson | FLSTFSE Screamin Eagle Fat Boy | Base |
| 2006 | Harley-Davidson | FLSTFSE2 Screamin Eagle Fat Boy | Base |
| 2006 | Harley-Davidson | FLSTI Heritage Softail | Base |
| 1993 | Harley-Davidson | FLSTN Heritage Softail Nostalgia | Base |
| 1994-1996 | Harley-Davidson | FLSTN Heritage Softail Special | Base |
| 2005-2017 | Harley-Davidson | FLSTN Softail Deluxe | Base |
| 2005-2006 | Harley-Davidson | FLSTNI Softail Deluxe | Base |
| 2014-2015 | Harley-Davidson | FLSTNSE CVO Softail Deluxe | Base |
| 1997-2004 | Harley-Davidson | FLSTS Heritage Springer | Base |
| 2008-2011 | Harley-Davidson | FLSTSB Cross Bones | Base |
| 2005-2007 | Harley-Davidson | FLSTSC Softail Springer Classic | Base |
| 2005-2006 | Harley-Davidson | FLSTSCI Softail Springer Classic | Base |
| 2010 | Harley-Davidson | FLSTSE CVO Softail Convertible | Base |
| 2011 | Harley-Davidson | FLSTSE2 CVO Softail Convertible | Base |
| 2012 | Harley-Davidson | FLSTSE3 CVO Softail Convertible | Base |
| 1987-1993 | Harley-Davidson | FLTC Tour Glide Classic | Base |
| 1989-1995 | Harley-Davidson | FLTCU Tour Glide Ultra Classic | Base |
| 1996 | Harley-Davidson | FLTCUI Tour Glide Ultra Classic | Base |
| 1998-2007 | Harley-Davidson | FLTR Road Glide | Base |
| 1998-2006 | Harley-Davidson | FLTRI Road Glide | Base |
| 2000 | Harley-Davidson | FLTRSEI Screamin Eagle Road Glide | Base |
| 2001 | Harley-Davidson | FLTRSEI2 Screamin Eagle Road Glide 2 | Base |
| 2008-2009 | Harley-Davidson | FXCW Rocker | Base |
| 2008-2011 | Harley-Davidson | FXCWC Rocker C | Base |
| 1995-2010 | Harley-Davidson | FXD Dyna Super Glide | Base |
| 2007-2017 | Harley-Davidson | FXDB Street Bob | Base |
| 1991-1992 | Harley-Davidson | FXDB-D Dyna Glide Daytona | Base |
| 1991 | Harley-Davidson | FXDB-S Dyna Glide Sturgis | Base |
| 2006 | Harley-Davidson | FXDBI Street Bob | Base |
| 1992,2005,2007-2014 | Harley-Davidson | FXDC Super Glide Custom | Base |
| 2005-2006 | Harley-Davidson | FXDCI Super Glide Custom | Base |
| 2008-2017 | Harley-Davidson | FXDF Fat Bob | Base |
| 2009 | Harley-Davidson | FXDFSE CVO Dyna Fat Bob | Base |
| 2010 | Harley-Davidson | FXDFSE2 CVO Dyna Fat Bob | Base |
| 2004-2006 | Harley-Davidson | FXDI Dyna Super Glide | Base |
| 2006 | Harley-Davidson | FXDI35 Dyna 35th Anniversary Super Glide | Base |
| 1993-2005,2007-2009,2014-2017 | Harley-Davidson | FXDL Dyna Low Rider | Base |
| 2004-2006 | Harley-Davidson | FXDLI Dyna Low Rider | Base |
| 2016-2017 | Harley-Davidson | FXDLS Low Rider S | Base |
| 1994-2000 | Harley-Davidson | FXDS-Conv Dyna Convertible | Base |
| 2007 | Harley-Davidson | FXDSE Screamin Eagle Dyna | Base |
| 2008 | Harley-Davidson | FXDSE2 Screamin Eagle Dyna | Base |
| 1993-2008,2010-2017 | Harley-Davidson | FXDWG Dyna Wide Glide | Base |
| 2001 | Harley-Davidson | FXDWG2 CVO Dyna Wide Glide | Base |
| 2002 | Harley-Davidson | FXDWG3 CVO Dyna Wide Glide | Base |
| 2004-2006 | Harley-Davidson | FXDWGI Dyna Wide Glide | Base |
| 1999-2005 | Harley-Davidson | FXDX Dyna Super Glide Sport | Base |
| 2004-2005 | Harley-Davidson | FXDXI Dyna Super Glide Sport | Base |
| 2001-2003 | Harley-Davidson | FXDXT Dyna Super Glide T-Sport | Base |
| 1987-1994 | Harley-Davidson | FXLR Low Rider Custom | Base |
| 1987-1994 | Harley-Davidson | FXR Super Glide II | Base |
| 1999 | Harley-Davidson | FXR2 | Base |
| 1999 | Harley-Davidson | FXR3 | Base |
| 2000 | Harley-Davidson | FXR4 | Base |
| 1987 | Harley-Davidson | FXRC Low Rider Chrome | Base |
| 1987-1994 | Harley-Davidson | FXRPF Police | Base |
| 1987-1992 | Harley-Davidson | FXRS Low Glide | Base |
| 1990-1994 | Harley-Davidson | FXRS-Conv Low Rider Sport Convertible | Base |
| 1987-1993 | Harley-Davidson | FXRS-SP Low Rider Sport | Base |
| 1987-1992 | Harley-Davidson | FXRT Sport Glide | Base |
| 2011-2013 | Harley-Davidson | FXS Blackline | Base |
| 2013-2017 | Harley-Davidson | FXSB Breakout | Base |
| 2013-2014 | Harley-Davidson | FXSBSE CVO Breakout | Base |
| 2016-2017 | Harley-Davidson | FXSE CVO Pro Street Breakout | Base |
| 1987-2009 | Harley-Davidson | FXST Softail Standard | Base |
| 1999-2009 | Harley-Davidson | FXSTB Night Train | Base |
| 2001-2006 | Harley-Davidson | FXSTBI Night Train | Base |
| 1987-1999,2007-2010 | Harley-Davidson | FXSTC Softail Custom | Base |
| 2000-2007 | Harley-Davidson | FXSTD Softail Deuce | Base |
| 2001-2006 | Harley-Davidson | FXSTDI Softail Deuce | Base |
| 2003-2004 | Harley-Davidson | FXSTDSE Screamin Eagle Softail Deuce | Base |
| 2004 | Harley-Davidson | FXSTDSE2 Screamin Eagle Softail Deuce 2 | Base |
| 2001-2006 | Harley-Davidson | FXSTI Softail Standard | Base |
| 1988-2006 | Harley-Davidson | FXSTS Springer Softail | Base |
| 1995-1997 | Harley-Davidson | FXSTSB Bad Boy | Base |
| 2001-2006 | Harley-Davidson | FXSTSI Springer Softail | Base |
| 2007 | Harley-Davidson | FXSTSSE Screamin Eagle Softail Springer | Base |
| 2008 | Harley-Davidson | FXSTSSE2 Screamin Eagle Softail Springer | Base |
| 2009 | Harley-Davidson | FXSTSSE3 CVO Softail Springer | Base |
| 1995-2003 | Harley-Davidson | XL1200C Sportster 1200 Custom | Base |
| 1995-2003 | Harley-Davidson | XL1200S Sportster 1200 Sport | Base |
| 1999-2003 | Harley-Davidson | XL883C Sportster 883 Custom | Base |
| 2002-2003 | Harley-Davidson | XL883R Sportster 883 Roadster | Base |
| 1987 | Harley-Davidson | XLH1100 | Base |
| 1988-2003 | Harley-Davidson | XLH1200 | Base |
| 1987-2003 | Harley-Davidson | XLH883 | Base |
| 1987-1996 | Harley-Davidson | XLH883DLX Sportster 883 Deluxe | Base |
| 1987-2003 | Harley-Davidson | XLH883HUG Sportster 883 Hugger | Base |
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 21 reviews
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Product Reviews
★★★★★ 5
21 Microneedling Pen Cartridges for Dr Pen. Well Made; Sanitary; Perform Well; Good Value
Aiscool 21 Pcs Microneedling Pen Cartridges for Dr Pen A6/N2/M5/M7 Replacement Tips 0.25mm by Aiscool
I sampled this 21-piece cartridge set to use with my compatible Dr. Pen device, and I was impressed by the variety included for the price.
Having a mix of 36-pin, 12-pin, and round nano cartridges makes this kit much more versatile than single-style refill packs.
I liked being able to switch between gentler skincare applications and more focused microneedling sessions without needing separate orders for different cartridge types.
The cartridges were individually sealed, which added reassurance about cleanliness and storage.
The fit with my compatible device was secure and consistent. Each cartridge locked firmly into place without wobbling or shifting during use, which is something I pay close attention to with replacement tips. The needles moved smoothly across my skin without snagging or dragging, and I did not notice bending or dullness during normal use. The 0.25mm depth is also a comfortable option for lighter at-home treatments with minimal downtime afterward.
I also appreciated how convenient this set is for maintaining a regular skincare routine. The nano cartridges worked well for serum application and gentler sessions, while the higher pin counts covered larger areas efficiently.
The cartridges themselves are lightweight, and while the plastic housing does not feel especially premium, the actual performance was dependable.
I made sure to inspect each sealed cartridge carefully before use, which I would recommend with any microneedling accessory product.
For the price, this set delivers strong value if you already own a compatible Dr. Pen model and go through cartridges regularly.
The combination of variety, compatibility, and individually sealed packaging makes it a practical refill kit for routine personal skincare use at home.
Pros:
✅ Includes 36-pin, 12-pin, and nano cartridge options
✅ Compatible fit with supported Dr. Pen models
✅ Individually sealed for cleanliness and convenience
✅ Needles glide smoothly without dragging
✅ 0.25mm depth works well for lighter at-home treatments
✅ Good value for a 21-piece mixed set
Cons:
❌ Plastic housing feels somewhat lightweight
❌ No protective caps over the needle openings
❌ Compatibility limited to certain Dr. Pen models
❌ Requires careful sanitation and inspection before use
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Fit my Dr. Pen perfectly!
I picked up this 21-piece microneedling cartridge set for my Dr. Pen device, and overall it’s a very solid value for at-home use. For the price (around the low $30 range), you’re getting a useful mix of 7 nano, 7 12-pin, and 7 36-pin cartridges, which makes it easy to switch between lighter skincare treatments, product infusion, and more intensive microneedling sessions without buying separate packs.
Compatibility was exactly as expected. The cartridges fit my Dr. Pen M7 securely with no looseness or alignment issues. They clicked into place properly and stayed stable during use, with no wobbling or skipping, which is important for a consistent treatment experience.
In actual use, the performance was reliable. The needles worked smoothly on the skin, and I didn’t notice any bending or breakage. Each cartridge comes individually packaged, which helps maintain sterility and makes them convenient for single-use sessions. The different tip types also give good flexibility depending on whether you want gentler nano-needling or deeper penetration with the 36-pin option.
That said, the build quality is a bit on the simpler side. The cartridges have a slightly plasticky feel and a blue-purple tint, so they don’t look as refined as some higher-end alternatives I’ve used. However, since these are disposable, that cosmetic difference doesn’t really affect performance.
Pros
Great value for a 21-piece mixed cartridge set
Includes nano, 12-pin, and 36-pin options for different treatments
Secure fit with Dr. Pen devices, no wobbling during use
Individually packaged and sterile for hygiene and convenience
Needles perform smoothly without bending or breaking
Cons
Build quality feels a bit lightweight and less premium
Plastic housing looks and feels cheaper than higher-end brands
Single-use design means ongoing repurchase required
Not much differentiation in “feel” compared to more expensive cartridges during use
Overall
This is a practical and cost-effective cartridge set for anyone doing regular at-home microneedling. While it doesn’t have the premium finish of higher-end options, it delivers where it matters—fit, sterility, and consistent performance. For the price, it’s a very reasonable and useful refill pack for routine skincare use.
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Reviewed in the United States on May 17, 2026
★★★★★ 4
Good Variety Pack With Solid Compatibility, But No Protective Caps
This is a review for this 21-piece variety pack of Dr. Pen microneedling cartridges. For around $32, this actually feels like a pretty solid value overall. You’re getting seven nano cartridges, seven 12-pin, and seven 36-pin, so it’s a nice mix depending on whether you’re doing product infusion, lighter treatments, or more intensive microneedling sessions. I always appreciate a variety pack because otherwise you end up buying giant boxes of one type and suddenly becoming emotionally committed to 36-pin needles for the next six years.
These fit my Dr. Pen M7/M7S perfectly with no issues clicking into place or staying secure during use. I didn’t have any wobbling, uneven dragging, or weird skipping while microneedling. Functionally, they performed just as well as other replacement cartridges I’ve used.
That said, they do look and feel a little cheaper than some other cartridges I’ve purchased before. Not necessarily unusable, just not quite as sturdy or polished-looking. Since these are single-use anyway, that may not matter to everyone, but it was noticeable.
My biggest hesitation is that these do not come with protective caps over the needles. To be fair, the listing photos actually do show them packaged this way, so it’s not misleading — they were honest about it — but personally I’m just more comfortable when cartridges have caps for an added sense of sterility and protection. They are individually vacuum sealed with expiration dates, which I do appreciate, but I’ll probably use my capped cartridges first before reaching for these.
Because of that, I’d feel a little more comfortable initially using these on areas like the chest or neck rather than jumping straight into facial treatments, at least until I’ve tested them more thoroughly. I’d also definitely be extra cautious about sanitizing everything beforehand.
Overall though, for the quantity and variety included, this still feels like a decent buy if you go through cartridges regularly.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Awesome versatility, affordable, easy to use micro needles for compatible Dr. Pen devices 🫶🏽💉🤩⭐️
This microneedling cartridge refill set is a pretty great value with a convenient mix of multiple needle options. It’s super versatile and should easily meet all your microneedling skincare needs. The cartridges fit securely with compatible Dr. Pen models (mine is 7). MAKE SURE YOURS FITS!! Some devices THREAD, others DO NOT!! This is super important b/c if you don’t have the correct type, there’s nothing you can do to make them work! These refills allow for easy and effective operation without causing skin snagging, tears, or injury (other than ‘micro injury,’ which is what’s intended by the whole concept of Microneedling!). The individually sealed cartridges are sanitary, convenient for travel, and are an excellent choice for any microneedling skincare regimen. While the plastic housing/casing feels somewhat lightweight, the kit’s performance is actually top notch. I do wish they had protective caps for even more superior protection, but it’s a great deal and I can’t complain for the price. It’s a total no-brainer if you have a compatible Dr. Pen Microneedling device.
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Reviewed in the United States on June 3, 2026
★★★★★ 3
Fit My Dr Pen M7 Correctly, But Check Packaging Carefully Before Use
I purchased these replacement cartridges for my Dr Pen M7, and the fit was fine with no compatibility issues. They attached properly and worked as expected during use, so at least from a fit/function standpoint, they seem pretty standard.
I also appreciate that the pack includes a variety of cartridge types and needle/pin counts instead of only one style. Having different options is useful depending on the area being treated and personal preference.
One thing I did notice though is that the cartridges arrived in Dr Pen branded packaging, and I honestly wasn’t completely sure about the legitimacy/authenticity of them. They may very well be genuine, but it did make me pause a little since there wasn’t much additional verification information included.
My biggest concern was that although the packages are labeled sterile, I noticed some type of brown residue/spotting inside one of the sealed cartridge packages. It appeared in multiple spots inside that particular package, so I immediately decided to throw that cartridge away rather than risk using it.
Because of that, I would strongly recommend inspecting each cartridge carefully before use and sterilizing again yourself for extra precaution. With microneedling products especially, cleanliness and safety matter a lot.
Overall, the cartridges themselves fit and functioned properly with my device, and I like the variety included, but quality control/sterility is something I’d advise paying close attention to before using them.
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Reviewed in the United States on May 19, 2026
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