Slim 8-Piston Architecture
Narrow caliper body (128 mm wide) helps preserve wheel clearance while running a true monobloc-style 8-pot design.
Pay in installments of $216.25 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 9 - Aug 14
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Slim SL8 Front Wheel 8-Piston Big Brake KitSlim Series Front Axle 8 Piston Slim SL8 Front 8 Piston Big Brake Kit The TTSPORT Slim SL8 is an 8 piston front big brake kit built around a narrow two piece forged aluminum caliper. It pairs a staggered 28 32 mm piston layout with two piece 380405 mm rotors to deliver high thermal capacity, firm pedal modulation, and repeatable stops behind 19 in or larger wheels. Why Builders Choose the SL8 Slim 8 Piston Architecture Narrow caliper body (128 mm
Slim Series · Front Axle · 8-Piston
Slim SL8 Front 8-Piston Big Brake Kit
The TTSPORT Slim SL8 is an 8-piston front big brake kit built around a narrow two-piece forged aluminum caliper. It pairs a staggered 28/32 mm piston layout with two-piece 380–405 mm rotors to deliver high thermal capacity, firm pedal modulation, and repeatable stops behind 19 in or larger wheels.
Why Builders Choose the SL8
Staggered Piston Bore
28 mm × 4 leading and 32 mm × 4 trailing pistons spread clamp load evenly across the pad for stable bite and reduced taper wear.
Two-Piece Forged Aluminum Body
Higher stiffness-to-weight than cast calipers; 5.20 kg per caliper without pads.
Heat-Insulated Pistons
One-piece heat-insulated pistons with dust boots limit fluid heat soak during back-to-back stops and protect seals from grit.
Two-Piece 380 / 405 mm Rotors
Internally vented, left/right directional, with iron/steel or carbon-ceramic options for street and track-day duty.
Technical Specifications & Kit Options
| Brake Caliper | ||
|---|---|---|
| Series | Slim Series | |
| Model / Application | SL8 | |
| Axle Position | Front | |
| Piston Count | 8-piston | |
| Piston Type | One-piece heat-insulated pistons with dust boots | |
| Piston Diameter | 28 mm × 4 / 32 mm × 4 | |
| Total Piston Area | 56.8 cm² per caliper (all pistons combined) | |
| Caliper Dimensions | L 391 mm × W 128 mm × H 144 mm | |
| Manufacturing Process | Two-piece forged aluminum body | |
| Net Weight | 5.20 kg per caliper, without pads | |
| Surface Finish | High-temperature gloss coating | |
| Recommended Wheel Size | 19 in or larger | |
| Recommended Rotor Size | Ø380–405 mm × 34 mm | |
| Brake Rotor Options | ||
| Rotor Option | Iron / Steel Rotor | Carbon-Ceramic Rotor |
| Rotor Material | Heat-treated high-carbon cast iron | Carbon-ceramic composite |
| Axle Position | Front | Front |
| Rotor Dimensions | Ø380 / 405 mm × 34 mm | Ø380 / 405 mm × 34 mm |
| Construction | Two-piece assembly | Two-piece assembly |
| Ventilation | Internally vented | Internally vented |
| Rotor Mounting | Fixed or floating, size/application dependent | Floating |
| Directional Design | Yes — left/right specific | Yes — left/right specific |
| Rotor Face Pattern | Curved slot / Grain slot / Wave slot / Drilled-and-slotted | Cross-drilled |
| Brake Pad Options | ||
| Pad Option | For Iron / Steel Rotors | For Carbon-Ceramic Rotors |
| Compatible Rotor Material | Iron / steel only | Carbon-ceramic only |
| Operating Temperature Range | 0–600 °C | 0–700 °C |
| Average Friction Coefficient | μ ≈ 0.38 | μ ≈ 0.45 |
| Lines | ||
| Brake Line Construction | Three-layer construction | |
| Brake Line Material | PTFE inner liner / SUS304 stainless braid / PVC protective outer sheath | |
| Brake Line Function | Reduces line expansion under pressure for a firmer pedal | |
| Brake Line Fittings | Vehicle-specific on both caliper and chassis sides | |
| Brackets | ||
| Rotor Hat Manufacturing Process | CNC-machined | |
| Rotor Hat Material | High-strength aluminum alloy | |
| Caliper Bracket Manufacturing Process | CNC-machined | |
| Caliper Bracket Material | Carbon steel | |
| Caliper Mounting Type | Radial mount with vehicle-specific brackets | |
| Fitment & Installation | ||
| Minimum Spoke Clearance | 90 mm | |
| Recommended Wheel Size | 19 in or larger | |
| Rotor Diameter Selection | 380 or 405 mm, selected according to vehicle application and wheel clearance | |
| Bedding-In Procedure | Required before normal use | |
Iron/steel rotors suit aggressive street and track-day use. Carbon-ceramic rotors reduce unsprung mass and resist fade in extended high-temperature work. Friction values vary with temperature, line pressure, and rotor condition. Pad and rotor materials must be matched — never run iron-rotor pads on a carbon-ceramic disc.
Package List
Calipers ×2
Two SL8 8-piston front calipers.
Brake Pads
Matched brake pads for both front calipers.
Brake Rotors ×2
Two-piece rotors in your selected size and material.
Caliper Brackets ×2
CNC-machined carbon steel brackets sized for radial-mount installation on the matched chassis.
Rotor Hats ×2
CNC-machined high-strength aluminum alloy rotor hats.
Brake Hoses ×2
Stainless-steel braided brake lines with vehicle-specific fittings.
Will It Fit? Your 3-Step Check
Wheel fitment is not universal. Always verify spoke clearance, caliper window depth, and wheel offset against the supplied caliper dimensions (391 × 128 × 144 mm) before ordering. Send wheel specs and your vehicle details to our team for a clearance check.
1. Wheel Diameter
19 in or larger wheels are required.
2. Spoke Clearance
The SL8 requires a minimum 90 mm spoke clearance.
3. Vehicle Model
The SL8 is a platform-adapted big brake kit. Confirm your year, make, model, and wheel specs with our team so we can ship the correct bracket and line set.
Installation & Break-In
- Installation should be performed by a qualified brake technician.
- Caliper mounting uses radial mount with vehicle-specific brackets.
- Brake line fittings are vehicle-specific on both caliper and chassis sides.
- A proper bedding-in procedure is required to transfer pad material to the rotor face and stabilize friction before normal use.
- Skipping bedding-in can cause uneven friction, vibration, and reduced bite.
- Pad and rotor materials must always be matched.
Frequently Asked Questions
What wheel size do I need to clear the SL8 caliper?
19 in or larger wheels are required, with a minimum 90 mm spoke clearance. The slim 128 mm caliper width helps, but every wheel design is different — verify clearance before ordering.
Why does the SL8 use staggered 28 / 32 mm pistons?
Smaller leading pistons and larger trailing pistons spread clamp force more evenly across the pad. This reduces tapered pad wear and gives more linear pedal modulation under repeated braking.
Should I choose iron/steel or carbon-ceramic rotors?
Iron/steel rotors offer strong bite, excellent value, and hold up to aggressive street and track-day use. Carbon-ceramic rotors cut unsprung weight, resist fade longer at extreme temperatures, and last significantly longer — at a higher price point.
Is this kit a direct bolt-on for my car?
The SL8 is a platform-adapted big brake kit. Calipers, brackets, and brake-line fittings are matched to your specific vehicle. Confirm your year, make, model, and wheel specs with our team so we can ship the correct bracket and line set.
What pads ship with the kit?
Pads are matched to your rotor choice. Iron/steel rotors use a 0–600 °C pad with μ ≈ 0.38. Carbon-ceramic rotors use a CCB-specific pad rated 0–700 °C with μ ≈ 0.45. Pad and rotor materials must always be matched.
Do I need to bed-in the brakes?
Yes. A proper bedding-in procedure is required to deposit an even pad transfer layer on the rotor face. Skipping it can cause uneven friction, vibration, and reduced bite.
Ready to spec your SL8 build?
Send your vehicle, wheel specs, and rotor preference. We'll confirm clearance and the correct bracket/line set before the kit ships.
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
4.0 ★★★★★
Based on 28 reviews
Sort
Product Reviews
★★★★★ 5
It's just a Proteus Core, but wireless. Wait... it's a PROTEUS CORE, but WIRELESS!!!
Color: Black, Style: Wireless, Pattern Name: Mouse
I've been using a Logitech G502 Proteus Core for a couple of years, and I've been wanting a wireless mouse for ages however, I had been hesitant to switch to anything else because I loved that G502 Proteus Core.
Then, this mouse came out. I knew it was time to upgrade. I get a mouse that looks, feels and performs identically to my Proteus Core. No, scratch that, BETTER than my Proteus Core. Except now no more wire wrangling. No more wire catching on the edge of a table or needing to tape it down. Except the sensor is faster and better than my G502PC, and the wireless mouse is somehow LIGHTER than the wired version. What kind of space age magic is this!?
When I got it at first, I was actually a little disappointed. I had been excited for this new, fancy mouse that was going to step my game up. But then I got it and it just felt exactly like my old one. It felt like nothing has changed. The wait to use it came to a somewhat anticlimactic end.
But then I thought about it and realized..... IT FEELS EXACTLY LIKE MY OLD ONE. I got literally exactly what I loved before, but this time with RGB lighting and no cord! What had I expected? I got literally exactly what I wanted, and it felt like home.
And the battery life, of my goodness, the battery life. I've been using this mouse since mid Early/mid-May. I probably use my mouse for about 1 to 4 hours a day, sometimes every other day depending on schedule. I charged this mouse to 100% on my first day of ownership. I haven't charged it since, and my battery currently reads 64%. Incredible. Over a month of regular and consistent use, with lighting on (at about 60-75% brightness, purple) and I haven't even gotten it to half charge. That tells me I've probably got another month or so of battery life to go!
I have been BEYOND satisfied with this mouse. I only had one minor hiccup. Initially I put the wireless receiver in the rear of the tower, straight into the motherboard's primary USB 3 port. Unfortunately, I noticed that I would get occasional stuttering and hitching with the mouse cursor. After a bit I noticed that it only happened when my cell phone was on my computer desk in front of my mousepad. I relocated the receiver to the USB3 slot on my Corsair K60 keyboard, problem solved. I haven't had one stutter or hitch since. I think my cell phone's WiFi signal was causing some form of interference. I could reproduce the problem with my cell phone location every time, so I'm confident in what the issue was.
BEYOND satisfied with this product. If you have ever used any of the Logitech G502 line - or mice of a similar shape - this product is an absolute NO BRAINER purchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 13, 2020
★★★★★ 4
It's a good product but not quite a grand slam..
Color: Black, Style: Wireless, Pattern Name: Mouse
I've tried 15+ different mice in the last few years. It would be a bigger number if I wanted to collect them, but I mainly just try to buy the best small to medium-ish ultralight mice in search of my endgame. Won't buy a mouse without seeing reviews first anymore. However, I did main the old wired G502 for a long time before I became a snob. I still like the G502 shape, scroll wheel, and button layout very much despite the fact that it's not going to help me get high scores in aim trainers. The disadvantages caused by the weight and shape are somewhat, but not totally, made up for by the added functionality of the extra buttons, which are also fantastic for productivity. This is an overall solid product with only a few minor flaws that kept me from giving it a perfect score.
The good:
1. Weight is noticeably reduced compared to the wired version.
2. The button layout every G502 fan fawns over is now on a wireless mouse. And it's genuinely a great button layout.
3. It's wireless, obviously.
4. Top-tier sensor.
5. Excellent battery life.
6. Infinite scroll wheel go brrrrr
The bad:
1. Standard black teflon mouse feet. Not the worst I've seen, but Logitech does have a reputation for putting sh*tty feet on great mice. They at least improved this on the Superlight, but even those were still too thin. These aren't bad, but they could be better.
2. Click feel is substantially worse compared to the old G502. Switches are clearly not the same. Honestly would've been tempted to give this mouse 5 stars if it weren't for the clicks. They aren't heavy and ultra tactile like they were before. They're light and standard-feeling now, which isn't a deal-breaker by any stretch, but it's disappointing.
3. Price. You have to get this thing for less than $100 or it simply isn't worth it. It's a step up from the wired G502 but not to the point of it being worth 3 times as much. Even at a $95 sale price, that's still pushing it.
Summary: you're sacrificing click feel and money to improve weight, obtain a nicer scroll wheel, and rid yourself of the atrocity that is the original G502 cable. You're also getting great battery life and excellent, low-latency wireless tech. It's a good mouse, but it's hard to say it's worth triple the amount of its predecessor, especially if you can replace mouse cables. Do not pay more than $100 for this mouse.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 13, 2021
★★★★★ 5
The best mouse is the best mouse
Color: Black, Style: Wireless, Pattern Name: Mouse
I've used the wired in the past and it was my favorite mouse and after using an ASUS wireless mouse for the last 2 years I decided to go back to the Logi G502 only the wireless version this time. Connectivity is great. Disappointed that it doesn't use USB-C to charge the mouse itself, but whatever. This thing is so great and more comfortable than the last mouse I was using. That's a win
All I'm saying is it's great to have this mouse again because it's hard to argue that this is the best mouse for gaming. I can't comment on battery life as I just received it but from the rest of the reviews, its has great battery life.
But upon immediate use, I just can't recommend this mouse enough!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 22, 2026
★★★★★ 5
Simply a good mouse.
Color: Black, Style: Wireless, Pattern Name: Mouse
Simply a great mouse, Love the layout of the buttons, it feels very natural is use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
★★★★★ 5
Dependable, Reliable
Size: 1 Pack, Style: USB Receiver, Color: Swift Grey, Size: 1 Pack, Style: USB Receiver, Color: Swift Grey
As advertised. Logitech, best mouse for your hard-earned cheddar!
It’s not that the (years) old Logitech mouse failed in any operational way, it just got that gummy, sticky surface texture that’s impossible to remove. While shopping for a replacement I noticed an off-brand mouse/keyboard combo and thought, “hey, 2 for 1”…mistake. All was well for about three weeks, long enough that when the gremlins arrived I didn’t immediately associate the new hardware. For the purposes of this discussion, gentle reader, know that I run legacy (what I affectionately refer to as, “Lazarus”) builds. Rigs that started life running Windows Vista/7, died, and that now, resurrected, run 10 and 11, and all that that implies. So, when a mouse started stuttering, of course I thought it was a gremlin in the machine, right? I spent more days than I am comfortable sharing with you pouring over processes and background apps, and registry trims…before Accam’s Razor suggested I eliminate the mouse as a variable. Changing the battery was ineffective, but when I swapped in the ooold Logitech…Yahtzee/Bingo/Booyah…smooth and precise…butter! All I needed was a new Logitech mouse.
So, if you’re here you likely are having mouse issues of your own, or you just need one that works…this is it!
😉
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026