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Discussion Starter · #1 ·
A beefier Rear Sway Bar will help reduce understeer on the 10th gen. Upgrading only the rear sway bar, and not the front sway bar, may change handling characteristics.

The OEM specs for the 10th Gen Accord are:

Sport and Touring:
Front Sway Bar 27.2 mm x 5.0T
Rear Sway Bar 16.5 mm

LX and EX:
Front Sway Bar 26.5mm x 5.0T
Rear Sway Bar 16.0 mm
 

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Discussion Starter · #3 ·
Rear Sway Bar Part Numbers - OEM Honda

All 10th Gen Accords with 17" wheels
Part Information
Part Name: STABILIZER, RR.
Part Number: 52300-TVA-A03
Honda Code: 9780971
Front Sway Bar 26.5 mm x 5.0T
Rear Sway Bar 16.0 mm
OEM Honda Part 52300-TVA-A03 | Rear Stabilizer

All 10th gen Accords with 19" wheels + Hybrid

STABILIZER, RR.
Part Number: 52300-TVA-A13
Honda Code: 9780972
Front Sway Bar 27.2 mm x 5.0T
Rear Sway Bar 16.5 mm
OEM Honda Part 52300-TVA-A13 | Rear Stabilizer
This parts catalog shows EX-L 2.0 with the bigger bar, although all spec sheets show smaller bars on EX-L 2.0
 

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Discussion Starter · #9 ·

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Discussion Starter · #13 ·
Swaybar stiffness

The effective spring rate (stiffness) of a swaybar is proportional to the bar diameter raised to the 4th power.
(D1xD1xD1xD1 / D2xD2xD2xD2)

IMHO, the front bar is hollow and the rear bar is solid.

Weight reduction is the reason for hollow bars.
 

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Discussion Starter · #16 ·
ALL Hybrids, Sport, Touring, and 2.0T get larger F&R sway bars

Stabilizer, Rear - Honda (52300-TVA-A13)
According to College Hills Honda, Honda Parts Network this 16.5mm sway bar fits:
2018 Honda ACCORD HYBRID SEDAN EX, EX (JAPAN ENGINE), EXL, EXL (JAPAN ENG/NAVI), EXL (JAPAN ENGINE), EXL (NAVI), LX, LX (JAPAN ENGINE), TRNG, TRNG (JAPAN ENGINE) Variable
2018 Honda ACCORD SEDAN 20EX-L, 20EX-L (NAVI), 20SPT, 20TRNG, SPORT, TRNG 6 Speed Manual, Automatic, Variable
https://www.collegehillshondaparts.com/oem-parts/honda-stabilizer-rear-52300tvaa13
2018 Accord Sedan 20EX-L XAT | Rear Knuckle

Stabilizer, Rear - Honda (52300-TVA-A03)
According to College Hills Honda, Honda Parts Network this 16.0mm sway bar fits:
2018 Honda ACCORD SEDAN EX, EX-L, EX-L (NAVI), LX Variable
https://www.collegehillshondaparts.com/oem-parts/honda-stabilizer-rear-52300tvaa03
OEM Honda Part 52300-TVA-A03 | Rear Stabilizer

According to Honda:
All Hybrid, Sport, Touring, EX-L 2.0T, EX-L Navi 2.0T get 27.2 mm x 5.0 mm (tubular) / 16.5 mm (solid)
There is one error in this list: no Sport 1.5 is listed.
All LX, EX, EX-L, EX-L Navi 1.5 get 26.5 mm x 5.0 mm (tubular) / 16.0 mm (solid)
https://automobiles.honda.com/accord-sedan#
 

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Discussion Starter · #17 ·
Eibach RSB for 2.0T update

Bar is "in production" but not yet in stock. Price is $161, with bushings. It uses OE brackets and end links.
22mm Rear Sway Bar is Tubular and 2 Way-Adjustable.

These figures are from Progress for their 9th gen Accord RSBs, but give you an idea of the difference between stock and aftermarket bars:
Sway bar rate comparison:
OEM 16.0mm solid 41 lbs/inch
#62.0105 22.2mm solid 138/153
#62.0107 25.4 tubular 200/220
Mass comparison:
OEM 16.0mm solid 4.4 lbs.
22.2mm solid 11.2 lbs.
25.4mm tubular 7.8 lbs.
 

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Discussion Starter · #20 ·
Eibach RSB

REAR ANTI-ROLL Kit (Rear Sway Bar Only) E40-40-036-01-01 Rear Sway Bar is Tubular and 2 Way-Adjustable. 22mm (for 1.5T & 2.0T)
Call 800-507-2338
$161, available after November 16, 2018, taking pre-orders now.
 

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Discussion Starter · #22 ·
Progress on Progress RSB

I spoke to Progress and they're doing a test fitting soon. If all goes well, the sway bar should be available by year's end.
 

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Discussion Starter · #24 ·
Really?!

The OEM disparity is a 26.5mm FSB and a 16mm RSB. You'll want a close match in size between FSB and RSB.

I'd like some of what you're smoking.
 

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Discussion Starter · #40 ·
From Progress, Jan 7, 2019

"We have a prototype bar on a vehicle here locally, just waiting on some additional feedback from the customer. Estimated release would be late February."
 

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Discussion Starter · #51 ·
Progress RSB now available

Progress Rear Sway Bar for 2018 Honda Accord (also fits 2016 Civic)
Part No. 62.1018, $195.50 + shipping (CA to NY = $24)
• Progress .875" (22.2mm) dia. precision-bent alloy steel sway bar.
• Poly bushings and lateral location rings for instant sway bar response.
• New bushing brackets with TIG welded gussets for zero tear-out.
• Powder-coated sway bar & brackets for superior appearance & durability.
• Complete kit includes bushings, brackets and synthetic chassis lube.
• Designed for use with the OEM end links.
It's a simple installation, only six fasteners. Just install, torque to specs.
Sway Bar rates:
OEM 16.5mm dia. Solid sway = 240 lbs/in.
Progress 22.2mm dia. Solid sway = 740 lbs/in.
Includes reinforcement brackets!

Coupon Code: 20BUCKS for $20 off.

https://www.progressauto.com/products/sfID1/12/sfID2/34/sfID3/90/productID/864
 

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Discussion Starter · #53 ·
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Discussion Starter · #57 ·

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Discussion Starter · #78 ·
I installed a Progress Rear Sway Bar (.875"/22.2mm). There is NO "twitchy handling," and "ride quality" does NOT suffer. It corners flatter and understeer is reduced, and I'd say this is the way it should have come from the factory. Coupon Code: 20BUCKS for $20 off. (Not sure if this still works.)
 
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