DHM 149cc Big Bore Kit - 2022+ Honda Grom
SKU: 7001762403

DHM 149cc Big Bore Kit - 2022+ Honda Grom

Sale price$157.05 Regular price$174.50
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

DHM 149cc Big Bore Kit - 2022+ Honda GromWider skirt bridges for more squirter clearance One additional oil control ring lubrication hole compared to the previous piston Two additional piston skirt lubrication holes compared to the previous piston Compression on pump gas is now 12: 1 to reduce detonation when hot Kit includes: 55mm Forged Piston with ring kit 55mm Sleeved cylinder Base and head gasket set This kit provides a significant horsepower and torque increase across the entire rev

Wider skirt bridges for more squirter clearance
One additional oil control ring lubrication hole compared to the previous piston
Two additional piston skirt lubrication holes compared to the previous piston
Compression on pump gas is now 12:1 to reduce detonation when hot
Kit includes:

  • 55mm Forged Piston with ring kit
  • 55mm Sleeved cylinder
  • Base and head gasket set

This kit provides a significant horsepower and torque increase across the entire rev range. Expect gains of 30% in the midrange over a bike with intake, exhaust and cam, and double the horsepower of a stock bike at 8500rpm.

ECU flash or an aRacer MiniX and AF2 combo will be required for proper installation.

ECU Flash located HERE

Required supporting mods other than the ECU tuning:

Two base gaskets included. Use both the OEM Honda base gasket and the grey paper gasket for pump fuel setups, use only the OEM Honda base gasket for race fuel.
Oil coolers are required. Keep an eye on oil temps.
An NGK CR9E spark plug must be used
Ring gaps must be set during install, please see the setup sheet for further info.
91 octane is the bare minimum, and 93 is preferred.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 7001762403

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.4 ★★★★★
Based on 912 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
C
Verified Purchase
Chavely
New York, US
★★★★★ 5
CUTE
Color: Cloud White, Material Type: Paper, PU
I absolutely love this jewelry organizer! The 2-layer design gives it plenty of space without being bulky, making it perfect for travel. I was able to neatly store my earrings, necklaces, rings, and bracelets without anything getting tangled. The interior is soft and protects my jewelry really well, and the compartments are thoughtfully designed to keep everything in place. The compact size fits easily in my suitcase or handbag, which is a huge plus. The cloud white color looks elegant and makes it feel like a great gift option too. Overall, it’s practical, stylish, and very convenient for keeping jewelry organized on the go. Highly
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
L
Verified Purchase
Lisa T.
Whiting, US
★★★★★ 5
I bought myself one and this one was gift for a friend.
Color: Cloud White, Material Type: Paper, PU
Very classy travel jewelry box. Just the size. Made well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
V
Verified Purchase
VICKI CARROLL
Boise, US
★★★★★ 4
Nice Jewelry Box
Color: Jelly Pink, Material Type: Paper, PU, Color: Jelly Pink, Material Type: Paper, PU
Really nice jewelry box just smaller than expected. My fault for not checking the dimensions first. It’s a great value for the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
C
Verified Purchase
Coco
San Leandro, US
★★★★★ 5
Nice little jewelry box
Color: Cloud White, Material Type: Paper, PU
Just what I wanted in size and available compartments. The only thing I am hesitant about is the paper outside. Mine is white and may get dirty quickly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
J
Verified Purchase
James
Boise, US
★★★★★ 5
A Lovely and Useful Gift
Color: Cloud White, Material Type: Paper, PU
I bought this SONGMICS jewelry organizer box as a gift and it was a great choice. The design is beautiful and it keeps jewelry well organized. It’s compact and perfect for travel or everyday use. The person I gave it to loved it and uses it all the time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026

recommand products