SKU: 53748985155

Sirris F43 CMX Front Fork for E Ride Pro SR

Sale price$1012.50 Regular price$1125.00
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 13 - Aug 18

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For Your Every Summer RSVP, with Code: SUMMER15

Description

Sirris F43 CMX Front Fork for E Ride Pro SRSIRRIS F43 CMX TUNE RIDE IT ONCE. REGRET EVERYTHING ELSE. F43 CMX THE WORLDS BEST COMPACT E MOTO FORK. PERIOD. An oversized, race built F43 chassis paired with our CMX tuned closed cartridge damper built for elite control, razor sharp handling, and unreal front end confidence. This is the strongest, most durable, highest performance fork available. You need to ride it to believe it. Its that good. BIKE FITMENT: E RIDE PRO SR Note: This fork also fits

SIRRIS F43 CMX TUNE

RIDE IT ONCE.
REGRET EVERYTHING ELSE.

F43 CMX

THE WORLD’S BEST COMPACT
E-MOTO FORK. PERIOD.

An oversized, race-built F43 chassis paired with our CMX-tuned closed cartridge damper — built for elite control, razor-sharp handling, and unreal front-end confidence. This is the strongest, most durable, highest performance fork available.

You need to ride it to believe it.
It’s that good.

BIKE FITMENT:

  • E RIDE PRO SR

Note: This fork also fits the E Ride Pro SS 3.0, it will feel quite a bit Stiffer on the SS 3.0 due to having heavier spring rates for a heavier weight bike. Please compare Spring rates to the E Ride Pro SS 3.0 CMX Offering

SPRING RATE CHART:

Sirris offers two weight ranges when selecting your CMX Tune F43 fork for E-Ride Pro SR. (Listed weight ranges are rider weight without riding gear on. 15 pounds of riding gear is calculated into the weight ranges)

140 lbs - 180 lbs  (Medium = 4.0/4.0 springs)
180 lbs - 220 lbs  (Heavy = 4.4/4.0 springs)
Fork spring rates listed above are left side/right side.

Installation Guide:

 

 

TOOL-FREE COMPRESSION ADJUSTERS

NEW FOR CMX — Allows for quick compression adjust without a screwdriver.
Enjoy nearly 30 clicks of quick external adjustability.

DIRECT MOUNT STEM

DM READY — New CMX fork is designed with a Direct Mount (DM) setup, so the stem you’re already using will bolt right up—no hassle, no extra parts.

DROP CLAMP OPTION

BIG WHEEL OPTIONAL — Allows for fitment of 21” wheel by raising the front end an additional 25mm while retaining 220mm travel. (Raising the front end maintains balance of the bike if paired with a longer shock that raises the rear)

NEW AXLE & BRAKE MOUNTS

ULTRA STIFF AND CONFIGURABLE — Axle and drop out assembly promotes front end feel and steering precision. Replaceable caliper mount brackets allow for caliper upgrades.

FORK SPECS:

Architecture
Upside down fork

Travel
220 mm

Free length
775 mm
(drop clamp option adds another 25mm of extended length)

Fork Spacing
178 mm - allows for unlimited tire choice (dirt or street)

Fork weight
4 kg per leg (driven by sturdy construction required for the forces and speeds encountered when pushing these bikes to their limits without compromising performance)

Stanchions
Ø43, high tensile steel with hard chrome

Outer tubes
Seamless 7050 aluminum, type 3 hard anodized coating

Drop outs
6061 aluminum, type 2 anodized coating
Replaceable caliper mount brackets allow for caliper and wheel upgrades

Axle
Ultra-high tensile hard chromed axle increases steering precision and confidence

Triple clamps
Billet 6061 aluminum, type 2 anodized coating
Optional drop clamp allows for 21” front wheel conversion

Steer tube 
Seamless 7050 aluminum, type 2 anodized coating

Damping
Symmetrical, adjustable closed cartridge with spring backed modified IFP

Damper bodies
Seamless 7050 aluminum, type 3 hard anodized coating

Rebound
Dual side high tensile steel spring, adjustable

Adjusters
External tool-free compression, rebound adjustment
(rebound adjusted using tool)

Seals
NOK MX seals 

Bushings
Daido MX bushings

Guards
High impact PP, 210-degree wraparound

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: 53748985155

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Verified Purchase
Stephen L. Smith
Belleville, US
★★★★★ 5
Worth The Cost Using For Subaru's.
Size: 5 Quart, Style: 1 Pack
Worked great in my Subaru Outback and my daughter's Subaru Forester. Both transmissions shifting very smoothly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
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Verified Purchase
JACK
Lowell, US
★★★★★ 5
Exactly what advertised
Size: 5 Quart, Style: 1 Pack
Good product and is the same as Genuine Subaru CVT fluid. This company makes it for Subaru
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
S
Verified Purchase
Steve
Phoenix, US
★★★★★ 5
Fit for 2021 Subaru Forester CVT
Size: 5 Quart, Style: 1 Pack
Works just fine in the 2021 Forester. Better value than subaru branded CVT Oil. Compatible with any subaru CVT.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
D
Verified Purchase
Dwight Byrd
Lexington, US
★★★★★ 5
A much more affordable option for Subaru owners
Size: 5 Quart, Style: 1 Pack
When you're paying between $16 & $18+ per quart of Subaru brand CVTF 2 fluid this is a much more affordable option. If you look on the back of a Subaru branded CVTF 2 quart bottle you'll see the Idemitsu logo. Doing this job myself saved me over $1000 on what the dealership quoted me to change the valve body and drain and fill my CVT without skimping on anything.
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Reviewed in the United States on March 18, 2026
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Verified Purchase
neal
Fort Morgan, US
★★★★★ 5
Same fluid as the Subaru brand
Size: 5 Quart, Style: 1 Pack
This is the manufacturer that makes the Subaru cvt fluid. I used this for the drain and fill on a 2019 Subaru Forester. No problem using a hand pump to fill the transmission. Excellent product will use again to service a 2018 Subaru Crosstrek.
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Reviewed in the United States on April 22, 2026

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